Police have downplayed the first security scare of the G20 leaders summit, saying there was never any threat to public safety.
Police found two projectors, disguised as security cameras, inside a security zone at the Brisbane Convention and Exhibition Centre, where the summit of world leaders is being held.
Deputy Commissioner Ross Barnett said police found the devices on Sunday morning, before the BCEC precinct was put into lockdown.
"The area was still accessible at the time these devices were put up," he told the ABC.
He said the devices were designed to project "political messages" up onto the wall of a building.
"Nothing more sinister than that. There was no threat whatsoever to safety."
Police say they're still trying to find out who planted them.
