Dandenong North teen Irfaan Hussein called himself Abu Sufyan Al Australi. Source: Supplied

The family of 19-year-old Irfaan Hussein has confirmed his death but did not comment on how he had died, the Herald Sun reports.

It is believed however, that he was either killed in a bomb blast or was beheaded as he attempted to flee the Middle East.

The Dandenong North teen, who called himself Abu Sufyan Al Australi, attended school with Numan Haider, who was shot dead last year after stabbing two Melbourne police officers.

Police told a court earlier this month that another Melbourne teenage terror suspect, Harun Causevic, had Hussein’s international phone number when he was arrested for allegedly plotting attacks on Anzac Day.

Fallen Australian jihadists

The Prime Minister, when asked about the reported death today, urged young Australians against going into the terrorist “danger zone” stretching across Iraq and Syria.

“We know that the death cult is reaching out to us. We know that the death cult is attempting to brainwash young people online. Sadly there are some people who have succumbed to this brainwashing,” Mr Abbott said in Mackay, north Queensland.

“If you go, you are likely not to come back because it is a very dangerous place. Do not go; that’s my message.

“If you do go and you do to try to come back, as far as I’m concerned, you will be arrested, you will be prosecuted and you will be jailed because there is no place in our society for people who have been radicalised and brutalised by participation in these terrorist movements.”

Victorian Premier Daniel Andrews was careful not to comment on the teen’s death before being briefed later today.

“These are really significant issues of international security and again we’ll get some briefings today,” he told reporters on Monday.

Hussein would become the fourth Victorian to be killed while fighting for IS in the Middle East in the past three months.

Additional reporting: AAP