BRIDGEPORT, Conn. (AP) Police are investigating after three armed men in masks broke into a home and assaulted three Sacred Heart University students before ransacking their off-campus residence.

The break-in occurred at the students' home on Old Town Road in Bridgeport around 5 p.m. Saturday.

Police say three armed men forced their way through the front door and pistol whipped the students. The home's downstairs area was raided by the assailants, who fled after stealing cell phones, jewelry and watches.

One shot was fired in the basement of the residence. Police say a 40-caliber shell casing and spent bullet fragment was recovered.

Daniel Wrona and Austin Maggiolo, both 20, were taken to St. Vincent's Hospital with head lacerations. Twenty-two-year-old Aaron Liebenthal declined medical attention for minor swelling.

The suspects are still wanted.