INDIANAPOLIS – Indiana State Police is investigating a crash involving a motorcycle that left one man dead Saturday evening.

Police say it happened just after 5 p.m. on the ramp heading on to Rockville Road from northbound I-465 on the west side of Indianapolis.

Police said a preliminary investigation determined the motorcyclist was heading northbound on I-465 and attempted to exit onto Rockville Road. The rider lost control on the curve, ran off the road and struck a sign.

There were no other vehicles involved. The motorcyclist was not wearing a helmet at the time of the crash.

The Marion County coroner later identified him as Matthew Rhodes, 50.