SPRINGFIELD, Mass. (AP) -- State and Springfield police are investigating a fatal shooting and possible carjacking on an on-ramp to Interstate 91.

State police say a man with a gunshot wound was found shortly after 3 a.m. Friday on the Exit 9 on-ramp to Interstate 91 northbound. Authorities say the victim later died at Baystate Medical Center.

West Springfield police later stopped a vehicle that matched the description of the victim’s vehicle. Authorities say the driver fled on foot but was later caught by state police. The man was arrested on an outstanding warrant not related to the shooting.

State police say the investigation is ongoing.

The names of the victim and the suspect haven’t been released.