A motorcyclist was seriously injured Saturday night in a crash in Southbury. State Police say 31-year old Kenneth Fraser of Watertown lost control of his motorcycle while heading westbound on Lakemere Drive. The crash happened around 8:45 pm Saturday. Fraser was unresponsive and transported to Waterbury Hospital with serious injuries. Police noted that the road was dry and the weather was clear at the time of the crash. The accident remains under investigation.