Officer Laura Meltzer says gunfire erupted just after midnight Wednesday when two groups that knew each other squared off in the elevator lobby of the parking structure near the UA Showcase Theater.
Meltzer says the shooting wasn't in the theater or theater lobby, as was previously reported.
One of the most seriously wounded men was found in the parking elevator lobby and the other in an elevator on the fifth floor.
Both are in critical condition.
Meltzer says it's not clear how many shooters there were but multiple shots were fired.