Baltimore County police say they are looking for the person who may have been involved in a fatal late-night crash involving a motorcyclist in the Rosedale area. Authorities said they are looking for the driver of a gray or silver sedan-type vehicle that was traveling westbound on Philadelphia Road around 11:30 p.m. on April 25. The driver may have unwittingly struck the motorcyclist, who rear-ended the vehicle in front of him at Kenwood Avenue and was ejected from the motorcycle, landing in the center turn lane, police said. Police believe the gray or silver sedan may have attempted to go around the site of the crash and struck the motorcyclist as it continued westbound on Philadelphia Road. The motorcyclist, identified as Michael James Genco, 53, was taken to Johns Hopkins Bayview Medical Center where he later died, police said.Police are asking anyone who may have information on the driver of the gray or silver sedan to call police at 410-307-2020.Also on WBALTV.com: