A serious single-vehicle crash on Keystone Road south of Tryon Grove Road in unincorporated Richmond left a Wonder Lake man in critical condition on Friday. | Photo: Alex Vucha / Lake and McHenry County Scanner

A 66-year-old man was critically injured after he crashed his motorcycle into a deer, killing it near Richmond Friday evening.

The McHenry County Sheriff’s Office, McHenry County Conservation District Police Department and Richmond Township Fire Protection District responded around 8:42 p.m. Friday to the 6900 block of Keystone Road in unincorporated Richmond.

McHenry County Sheriff’s Deputy Kevin Byrnes said deputies received a call of a vehicle crash involving a motorcycle and a deer.

A preliminary investigation shows the motorcycle, driven by a 66-year-old Wonder Lake man, was driving southbound on Keystone Road south of Tryon Grove Road.

A serious single-vehicle crash on Keystone Road south of Tryon Grove Road in unincorporated Richmond left a Wonder Lake man in critical condition on Friday. | Photo: Alex Vucha / Lake and McHenry County Scanner

The motorcycle crashed into a deer in the roadway and the driver was ejected from the motorcycle, Byrnes said.

A Good Samaritan discovered the crash, called 911 and rendered aid to the driver until paramedics arrived.

A medical helicopter was requested to the scene but did not respond due to weather conditions.

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The man was transported by ambulance to Northwestern Medicine Hospital in McHenry in critical condition.

The driver was not wearing a helmet and the deer was deceased at the scene, Byrnes added.