A 39-year-old man died after a Westchester motorcycle crashed Wednesday night. It happened around 9:10 pm in the east-facing lane of Westchester Road between Butler Warren Road and Outlook Drive. According to people familiar with the matter, the motorcycle driver somehow left the road and crashed. The motorcyclist was declared dead on the scene. Butler County Coroner has identified the victim as Erich Keller, 39, in Cincinnati. Investigators say it is unclear if he was wearing a helmet at the time of the accident. The cause of the accident remains unknown.