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That made the girls feel uneasy. They did not want to be identified when questioned about the incident.
"One of our guys busted in hard with his foot. They tried to stop the door, but they got in there and got a lot of shots on him. Somehow he kicked him out, and then he got away so he ran and everybody took off running," said one of the witnesses.
"Well there was a girl in there who is very young and completely intoxicated to the point of where she was knocked out and laying there half naked. From her lower area up was completely nude. It doesn't take a genius to know what happened. We just don't know if it was one or more," the witness said.
Detectives secured the area from the bathroom all the way to the picnic benches. They gathered backpacks, a bag of candy and beverage containers at the scene.
Cops are not sure yet if drugs or alcohol caused the three girls to pass out.
"There was a bag of candy found and it is unknown at this time whether or not it was laced. There is also several empty bottles of different types of soda containers - Subway cup, bottles of empty soda - so we do not know what involvement that may have at this point so we're still actively investigating it," said LAPD Captain Steven Ruiz.
Authorities were seeking about a half-dozen more teenagers believed to be part of the initial group."Again we have one person in custody. Based on the information provided by the eyewitnesses we believe that a possible sexual assault occurred to at least one of the victims. It is unknown whether the other two were assaulted, it is still being investigated," Captain Ruiz said.
All three girls were taken to a hospital to be examined.