A shooting that wounded two women at Friday night's Chicago White Sox-Oakland Athletics game most likely involved a gun that went off inside Guaranteed Rate Field, Chicago's police superintendent said.

Officials have said little about where the bullets came from, or if someone brought a gun into the stadium, but Fred Waller said that investigators have nearly ruled out the possibility that the shots came from outside the ballpark.

"We're dispelling a lot of things," Waller told reporters. "(A shot) coming from outside is something we've almost completely dispelled. We're still looking at every avenue. It's still under investigation. Something from inside, it could've happened that way. We're looking at every avenue, exploring every lead and everything that we can get."

A spokesperson for Major League Baseball declined comment Monday.