The alleged terror plot to blow up a plane out of Sydney involved planting a bomb on an unsuspecting passenger.
"The person was going to be blown up without knowing they were part of a suicide mission," a source has told News Corp Australia.
Four men were arrested last week, over the alleged plot to take down a passenger plane using a bomb disguised as a meat mincer.
One of those men has been released without charge.
According to the Daily Tele, Police allege the device would've been planted on a family member or friend who would have no idea that they would be carrying a bomb used to blow up the international flight.
Authorities say the plan changed when it was decided the meat mincer wouldn't go unnoticed in the carry on luggage.
The alleged plot has led to heightened security at airports across Australia.