MORENO VALLEY (CNS) - A 22-year-old motorcyclist was fatally injured today in a collision at a Moreno Valley intersection.Justin Dimaculangan of Riverside died shortly before 7 a.m. at Delphinium Avenue and Heacock Street.According to the Riverside County Sheriff's Department, the victim was headed southbound on Heacock when he encountered a truck going in the same direction, preparing to make a left turn onto Delphinium.Sheriff's Sgt. Brian De Marco said that as the trucker initiated his turn, the motorcyclist collided with him and was ejected onto the roadway.Paramedics arrived within a few minutes and attempted life-saving treatment, but Dimaculangan was pronounced dead at the scene.The trucker, who stopped immediately after the crash, was not hurt.De Marco said