A 26-year-old man from Saint Joseph lost his leg after crashing his motorcycle into the back of a semi-truck Friday evening.

According to a news release from the Van Buren County Sheriff's Office, deputies were called to a traffic crash on I-94 near the 47.6 mile marker around 6 p.m.

When deputies got to the crash, the found a man laying on the ground near a motorcycle. Other drivers were stopping to help him.

The man's leg was amputated just below the knee and a tourniquet was applied to stop the bleeding. He was taken to Bronson Hospital in Kalamazoo for treatment.

Deputies determined that the 26-year-old was driving the motorcycle and rear-ended the semi truck as it slowed to a near stop because of a traffic back-up ahead. The motorcyclist was unable to stop in time and collided with the semi truck.

It is not yet known whether alcohol or drugs play a role in the crash. The 26-year-old was wearing his helmet.

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April Stevens is a multi-platform producer at WZZM 13. Have a news tip? Email news@wzzm13.com, visit our Facebook page or Twitter.