Four teens have been arrested after a group of up to 50 rioters rolled through the campus of Temple University attacking innocent bystanders and injuring several, police say.

Police were called when the mob of approximately 50 began running around the campus attacking people who were walking on the sidewalk on October 21, a local NBC affiliate reported.

Police hauled in more than 25 teens and charged at least four of them with assault.

Temple University spokesman Ray Betzner told the media that the mob was running through the campus playing “cat and mouse” with campus police, causing university officials to warn students to stay indoors.

One victim told officers that she and her boyfriend were walking on a sidewalk when the gang of teens descended upon them and began beating them.

“My boyfriend ran and got away but the second I tried to run, they grabbed me by my hair and started beating my head and back,” the student said.

“I somehow got to the other side of Oxford Street by the time they got me to the ground. I remember shoes coming for my face and after that I heard other kids from the group saying, ‘Yo chill, yo chill; it’s just a girl’ and they pulled my attackers off me,” she added.

In another case, a parent of a university student reported that the mob attacked his daughter by holding her down and “stomping her repeatedly.”

The university did not know the exact number of victims, and the investigation is ongoing.

Follow Warner Todd Huston on Twitter @warnerthuston or email the author at igcolonel@hotmail.com.