By Brad Segall

BENSALEM, Pa. (CBS) — Police in Bensalem, Bucks County say they’ve broken up a stolen cell phone ring that was operating inside the halls of Bensalem High School.

Police say they were notified in September by school officials about an unusually high number of thefts inside the school involving cell phones and similar electronics.

Bensalem public safety director Fred Harran says that a joint investigation was begun and they have now filed charges against 13 students — 12 from Bensalem High (photo) and one from the Bucks County Technical High School.

“We did a little undercover operation, which I can’t get specific about, but we were able to recover some of the phones, which led us to the arrest of 13 misguided youths,” Harran said today.

He says the students were stealing the phones from locker rooms and book bags and selling them to other students or on Craigslist, all in an effort to make a quick buck.

Harran says the investigation is still ongoing and he expects that more arrests will follow.