ALIQUIPPA, Pa.—Police say a man found on the side of the road with a self-inflicted gunshot wound had killed a western Pennsylvania man a day earlier.

Aliquippa police say 47-year-old Lawrence Rains shot and killed Richard Lincheck on Tuesday night, then spent the night hiding in a creek bed before he was found Wednesday with a gunshot wound to the face.

Police Chief Andre Davis says investigators recovered a gun and other evidence linking Rains to the killing. He says a motive is unclear at this point.

Rains remains hospitalized and will be arraigned on charges including criminal homicide and robbery upon his release. It's not clear if he has an attorney.

Aliquippa is about 10 miles northwest of Pittsburgh.