An Australian Federal Police spokesman confirmed a 25-year-old Beecroft man was arrested by the NSW Joint Counter Terrorism Team (JCTT) .

The arrest was part of continuing investigations into the planning of a terrorist attack on Australian soil and the facilitation of travel of Australian citizens to Syria to engage in armed combat, the AFP said.

The Beecroft man was reportedly leaving a prayer hall, Macquarie Radio reports.

The other man is believed to have already been in custody.

AFP officers will address the media later this morning.

More to come