Mystery surrounds the discovery of a woman in the toilets at Etihad Stadium suffering from cold, two days after the Melbourne venue was last used.
It's believed the 57-year-old woman had spent two days locked inside the ground in central Melbourne following the AFL match between Geelong and Richmond on Sunday.
It is unsure whether the ground was accessible since the game.
An Ambulance Victoria spokeswoman said they were called to the stadium by ground management at 11.30am on Tuesday after the woman was found.
She was in a confused state and was taken to Sunshine Hospital in a stable condition.
Police said no one had been reported missing.