BUFFALO, N.Y. (AP) — Buffalo Bills running back Marshawn Lynch is expected to plead guilty next week to an unspecified charge stemming from a hit-and-run accident involving his SUV, Erie County District Attorney Frank Clark said Friday.

Clark declined to detail the charge but said a tentative plea agreement assumes Lynch was driving his 2008 Porsche Cayenne when it hit a woman crossing a Buffalo intersection early May 31, leaving the victim with a bruised hip and in need of stitches.

There was one other person in the SUV at the time, Clark said. He would not say who it was.

The announcement of an "agreement in principle" between lawyers came as a grand jury was scheduled to begin hearing testimony in the case.