PITTSBURGH (AP) - Pittsburgh police have filed simple assault and conspiracy charges against three University of Pittsburgh football players over an incident last month.

Police on Thursday charged running back Ray Graham, receiver Devin Street and defensive back Lafayette Pitts in connection with an Oct. 21 incident involving three other students, one of whom reported he was hit in the head.

A preliminary hearing for all three men is scheduled for Jan. 9. Summonses were issued Thursday.

Graham, of Elizabeth, N.J., is the Panthers' leading rusher with 622 yards and seven touchdowns. Street, of Bethlehem, is the team's leading receiver with 50 catches for 695 yards and four scores. Pitts, of East Pittsburgh, is also the team's top kick-returner.

Court records don't list attorneys for the men. An email sent to a Pitt athletics spokesman wasn't immediately returned Friday.