A false evacuation alarm has caused dramatic scenes during the Collingwood-Adelaide AFL clash at the MCG.
Less than one minute into the second quarter, a message was played over the PA system instructing all patrons to immediately evacuate the venue.
Umpires stopped the match and players gathered in team huddles in the middle of the ground as fans began heading for the exits.
About four minutes later a second message was played, clarifying the initial evacuation order was a false alarm.
Collingwood led the match 5.3 (33) to 1.6 (12) when play was halted.
It restarted with a ball-up in Adelaide's forward line.