BOISE, Idaho (KTVB) - Boise police are investigating a crash that killed a motorcyclist Tuesday afternoon at the intersection of Apple Street and Federal Way. Officers say a semi-truck and a motorcycle crashed about 3:55 p.m. Police found the motorcyclist, a 49-year-old Boise man, dead on the scene when they arrived. Crash scene reconstruction experts arrived at the scene. The Ada County coroner will release the name of the man after his family has been notified. Police said the motorcyclist was wearing a helmet.