A motorcyclist was killed and a second rider was injured in a crash while riding with a group Saturday in Oceanside, police said. The crash happened in the north and south lanes of Coast Highway near West Street, shortly before 2 p.m. Police said a group of five or six motorcyclists was traveling north on Coast Highway when one rider slowed down after spotting a vehicle that stopped and was preparing to make a left turn. A second rider who was closely following was unable to stop and rear-ended the first motorcycle, police said. “Both motorcycles and riders fell to the roadway and slid into opposing lanes of traffic,” Oceanside police said in a news release. In the southbound lanes of Coast Highway, one of the fallen riders was hit by a Toyota Yaris and the other crashed into a different vehicle. One of the riders suffered head and chest injuries and was transported to a hospital, where he died. The second rider was treated at the scene. No one else was injured. The name of the man who died has not been released. Anyone with information about the crash is asked to call Oceanside Police Officer Jose Gomez at (760) 435-4952.