Unfolding ... A hospital security guard helps a student injured in the shootout at a school under attack by Taliban gunmen in Peshawar, Pakistan. Picture: AP/Mohammad Sajjad Source: AP

As Pakistan came to grips with the deadliest slaughter of innocents in the country, the Taliban released a dire warning on Wednesday, alongside the first images of the six men responsible for the attack; “this was just the trailer”.

Claiming the massacre was justified because the Pakistan army had long been killing the innocent families of Taliban fighters, spokesman Mohammad Khurasani was defiant in his promise that the worst was yet to come, warning civilians to remove themselves from military institutions.

“We are still able to carry out major attacks. This was just the trailer,” wrote Khurasani.

The gunmen, shot dead in the attack, are pictured behind a white Islamic banner.

This photo released in a statement by the Pakistani Taliban shows the Taliban fighters who stormed a military-run school in Peshawar, Pakistan on Tuesday, killing more than 140 people. Source: Supplied

A Pakistani army soldier walks past a bullet-riddled wall. Picture: Faroop Naeem Source: AFP

The bloodied ceremony hall at the army-run school a day after the attack. Picture: A Majeed Source: AFP

In an email, Pakistani Taliban spokesman Mohammad Khurasani claimed the attack was justified because the Pakistani army has allegedly long been killing innocent children and families of their fighters. Source: Supplied

Pakistan is mourning as the nation prepares for the mass funerals for the 141 victims, most of them children, killed in the Taliban attack on a military-run school in the country’s northwest.

A three-day official mourning period started on Wednesday, a day after seven Taliban gunmen, explosives strapped to their bodies, stormed the army public school in the city of Peshawar.

Students were gunned down and some of the female teachers were burned alive.

Army commandos fought the Taliban in a daylong battle until the school was cleared and all the attackers dead.

The massacre horrified a nation already weary of unending terrorist attacks.

Bound in grief ... Indian schoolchildren prepare lit candles ahead of a vigil in the northern city of Jalandhar as they pay tribute to the slain Pakistani schoolchildren and staff. Picture: AFP PHOTO/SHAMMI MEHRA Source: AFP

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Witnesses described how a huge blast shook the Army Public School and six Taliban gunmen in government paramilitary uniforms went from classroom to classroom shooting children, some as young as 12.

The Tehreek-e-Taliban Pakistan (TTP) claimed responsibility for the assault, calling it revenge for a major military offensive in the region.

The militants had been ordered to shoot older students, a Taliban spokesman said.

Family grief ... The uncle and cousin of injured student Mohammad Baqair comfort him as he mourns the death of his mother, a teacher at the school. Picture: AP Source: AP

‘THE MOST HEINOUS OF CRIMES’: BISHOP

Australian Foreign Minister Julie Bishop has vowed Australia will stand by Pakistan in the fight against terrorism.

“The killing of children is the most heinous of crimes,” Ms Bishop said in a statement.

“We share a common sense of grief and outrage at this senseless attack.”

She said such attacks only strengthened the resolve of nations committed to eradicating terrorism.

Earlier Prime Minister Tony Abbott couldn’t find the words to describe the mixture of grief and fury felt by people around the world by this latest atrocity.

He said he hoped the bloodshed reminded people who might otherwise be attracted to terrorism that it is never right to kill innocent people.

Massacre ... Gunmen reportedly went from classroom to classroom shooting students. Picture: AP/Mohammad Sajjad Source: AP

Tragic ... The wounded start arriving at a hospital for treatment. Picture: AP/Mohammad Sajjad Source: AP

‘I PLAYED DEAD’: A BOY’S TALE OF TERROR

A teenage survivor described how he played dead to escape the militants as they rampaged through the school, hunting for people to kill.

Shahrukh Khan, 16, said he and his classmates ducked below their desks when four gunmen burst into their room.

“I saw a pair of big black boots coming towards me. This guy was probably hunting for students hiding beneath the benches,” Khan told AFP from the trauma ward of the city’s Lady Reading Hospital.

Khan decided to play dead after being shot in both legs, stuffing his tie into his mouth to stifle his screams.

“The man with big boots kept on looking for students and pumping bullets into their bodies. I lay as still as I could and closed my eyes, waiting to get shot again,” he said.

Bloodshed ... an injured student receives treatment at a local hospital after the Taliban attack that least 141 people dead. Picture: AP Photo/Mohammad Sajjad Source: AP

A NATION IN MOURNING

Distraught parents thronged the city’s Lady Reading Hospital in the wake of the attack, weeping uncontrollably as children’s bodies arrived, their school uniforms drenched in blood.

Irshadah Bibi, 40, whose 12-year-old son was among the dead, beat her face in grief, throwing herself against an ambulance.

Injured ... Pakistani volunteers help carry injured students into hospital. Picture: AP/Mohammad Sajjad Source: AP

“O God, why did you snatch away my son? What is the sin of my child and all these children?” she wept.

“My son was in uniform in the morning. He is in a casket now,” wailed one parent, Tahir Ali, as he came to the hospital to collect the body of his 14-year-old son Abdullah. “My son was my dream. My dream has been killed.”

The Tehreek-e-Taliban Pakistan (TTP) claimed responsibility for the attack, saying it was retaliation for the army’s continuing operation against militants in the North Waziristan tribal area close to Peshawar.

“We are doing this because we want them to feel the pain of how terrible it is when your loved ones are killed,” said TTP spokesman Muhammad Khorasani.

“We are taking this step so that their families should mourn as ours are mourning.”

Heartbreaking ... The bodies of those killed are already being retrieved from hospitals. AP/Mohammad Sajjad Source: AP

Hospitals fill with injured ... Those not killed receive treatment for their wounds. Picture: AFP/ A Majeed Source: AFP

Police officials said the attack ended around 6.30pm local time, some eight hours after it began, with all six militants dead.

Prime Minister Nawaz Sharif described the attack as a “national tragedy unleashed by savages”.

“These were my children. This is my loss. This is the nation’s loss,” he said.

Sharif vowed that the country would not be cowed by the violence and that the military would continue with an aggressive operation launched in June in the North Waziristan tribal area to rout militants.

“The fight will continue. No one should have any doubt about it,” Sharif said.

Innocents ... Pakistani soldiers transport rescued schoolchildren after the Taliban attack on a school in Peshawar. Picture: AFP Source: AFP

INTERNATIONAL CONDEMNATION

US President Barack Obama condemned the attack and promised America will stand by Pakistan in its struggle against violent extremism.

“By targeting students and teachers in this heinous attack, terrorists have once again shown their depravity,” he said.

“We stand with the people of Pakistan, and reiterate the commitment of the United States to support the government of Pakistan in its efforts to combat terrorism and extremism and to promote peace and stability in the region.”

Teenage Nobel Peace laureate and education activist Malala Yousafzai, who was shot in the head by the Taliban in 2012 for campaigning for girls’ right to an education, condemned the attack.

“I am heartbroken by this senseless and cold blooded act of terror in Peshawar that is unfolding before us. Innocent children in their school have no place in horror such as this,” said Malala.

“I condemn these atrocious and cowardly acts and stand united with the government and armed forces of Pakistan whose efforts so far to address this horrific event are commendable.”

Worst nightmare ... a Pakistani army soldier clears the area outside a school attacked by Taliban in Peshawar as anxious parent wait for news of their children. Picture: AFP Source: AP

Provincial information minister Mushtaq Ghani told AFP the death toll had reached 130, with a similar number wounded.

The toll was confirmed by another provincial minister.

Mudassar Abbas, a physics laboratory assistant at the school, said some students were celebrating at a party when the attack began.

“I saw six or seven people walking class-to-class and opening fire on children,” he said.

Violence ... The students that survived were left bloody and injured. Picture: AP/Mohammad Sajjad Source: AP

Carnage ... Rescue workers transport students from ambulances into hospitals. Picture: AP/Mohammad Sajjad Source: AP

A student who survived the attack said soldiers came to rescue students during a lull in the firing.

“When we were coming out of the class we saw dead bodies of our friends lying in the corridors. They were bleeding. Some were shot three times, some four times,” the student said.

“The men entered the rooms one by one and started indiscriminate firing at the staff and students.”

The school on Peshawar’s Warsak Road is part of the Army Public Schools and Colleges System, which runs 146 schools nationwide for the children of military personnel and civilians.

Bloodbath ... A wounded student said all the children had bullet wounds. Picture: AP/Mohammad Sajjad Source: AP

The schools educate the children of both officers and non-commissioned soldiers and army wives often teach in them.

The attack began in the morning, with the Taliban shooting at random, said police officer Javed Khan.

Army commandos quickly arrived at the scene and exchanged fire with the gunmen, he said.

Outside the school, shooting was initially heard along with one loud bang of unknown origin.

Pakistani television showed soldiers surrounding the area and pushing people back.

On the scene ... Pakistani army troops arrived quickly to conduct an operation at the school. Picture: AP/Mohammad Sajjad Source: AP

Later, one of the wounded students, Abdullah Jamal, said that he was with a group of 8th, 9th and 10th graders who were getting first-aid instructions and training with a team of Pakistani army medics when the violence began for real.

When the shooting started, Jamal, who was shot in the leg, said nobody knew what was going on in the first few seconds.

At the ready ... Pakistani soldiers take up position. Picture: AP/Mohammad Sajjad Source: AP

“Then I saw children falling down who were crying and screaming. I also fell down. I learned later that I have got a bullet,” he said, speaking from his hospital bed.

“All the children had bullet wounds. All the children were bleeding,” Jamal added.

“This attack is a response to Zarb-e-Azab and the killing of Taliban fighters and harassing their families.”

Zarb-e-Azb is the official name for the army’s offensive against strongholds of the Taliban and other militants in North Waziristan.

The military has hailed the operation as a major success in disrupting the TTP’s insurgency, which has killed thousands of Pakistanis since it erupted in 2007.

Safely out ... A plainclothes security officer escorts students rescued from a nearby school during the attack. Picture: AP/Mohammad Sajjad Source: AP

Devastating ... Families wait for news and their loved ones at the hospital. Picture: AP/Mohammad Sajjad Source: AP

‘THEY ARE GOING FOR SOFT TARGETS’

More than 1600 militants have been killed since the launch of Zarb-e-Azb in June, according to data compiled by AFP from regular military statements.

Talat Masood, a retired general and security analyst, said the attack was intended to weaken the military’s resolve.

“It is both tactical and strategic. The militants know they won’t be able to strike at the heart of the military, they don’t have the capacity because the army are prepared,” Masood told AFP.

“So they are going for soft targets. These attacks have a great psychological impact.”

Taliban attack ... A wounded Pakistani student receives treatment at a hospital. Picture: AFP Source: AFP

The semi-autonomous tribal areas that border Afghanistan have for years been a hide-out for Islamist militants of all stripes — including Al-Qaeda and the homegrown TTP as well as foreign fighters such as Uzbeks and Uighurs.

Washington pressed Islamabad for years to wipe out the sanctuaries in North Waziristan, which militants have used to launch attacks on NATO forces in Afghanistan.

Peshawar has been the target of frequent militant attacks in the past but has seen a relative lull recently.

India has condemned the latest attack by Taliban militants.

Awful ... Pakistani parents react to the news of the attack. Picture: AFP/ A Majeed Source: AFP

Home Minister Rajnath Singh said the attack in the north-western city of Peshawar exposed the “real face of terrorism”.

“I strongly condemn the terrorist attack on a school at Peshawar,” he tweeted. “This dastardly & inhuman attack exposes the real face of terrorism. My heart goes out to the families of those children who got killed by the terrorists in Peshawar.”

India has repeatedly urged Pakistan to rein in militant groups operating on its soil.

India and Pakistan have fought three wars since independence in 1947, and deadly attacks on Mumbai by Pakistan-based militants dealt a blow to tentative peace talks in 2008.

Catastrophic ... Parents rush to the hospital to find their children. Picture: AP/Mohammad Sajjad Source: AP

French President Francois Hollande also condemned what he described as a “vile” attack on the school.

“No words can express the ignominy of such an attack against children in their school,” said Mr

Germany also spoke about the “cruel cowardice” of the Taliban attack.

Bloody attack ... a family member escorts children from the school. Picture: AP Source: AP

Foreign Minister Frank-Walter Steinmeier said in a statement he condemned the “criminal attack in the strongest terms”.

“The hostage-taking and murder of children exceeds in its cruel cowardice all that Pakistan, stricken by years of terror and violence, has known before.

“We mourn with the people of Pakistan the victims of this bloody terrorist attack. Our hearts go out to the families of the victims. For the many injured we wish speedy recoveries.”

Nation mourns ... Pakistani children pray during a candle light vigil for the victims of the Taliban attack. Picture: AP Photo/Fareed Khan Source: AP