EDMONDS, Wash. -- A man speeding along a road near Edmonds died when he lost control and crashed into a ditch, Snohomish County Sheriff's officials said.

Deputies say the crash happened just after 8 p.m. at 148th Street SW and 60th Ave. West.

Witnesses told investigators the man was driving westbound at a high rate of speed on 148th when he crossed over into the other lane, then went went off the roadway and into a ditch, according to spokesperson Shari Ireton.

Two witnesses ran over to the driver, who was unconscious, and performed CPR, but the rider was pronounced dead when medics arrived, Ireton said.

Police haven't identified the driver, only that he was a man in his 50s.

148th Street SW is closed around the crash scene for the investigation.