The man successfully got past security in the foyer of Cinnamon Grand hotel on Monday.
Team security and management immediately informed the ICC of the security breach.
The man has reportedly gone into a player's room in the guise of a male escort.
"It was a minor and isolated incident, involving an over-enthusiastic cricket fan, which was reported immediately by the Australia team management to the ICC and relevant authorities," an ICC spokesman was quoted as saying by 'ESPNcricinfo'.
"The trespasser has been dealt with by the law and the security for the tournament has been briefed and tightened," he added.
