MADRAS, OR -- A collision between a dump truck and a motorcycle resulted in severe injuries for the biker ... the crash took place about 11 miles north of Madras, Monday morning.

According to the Jefferson County Sheriff's Office, when deputies arrived at the accident site on Quaale road, they found the motorcyle and its driver, pinned beneath the rear trailer tires of the dump truck. Fire and Ambulance personnel and law enforcement worked together to free and care for the biker, who's name is not yet known. He was life flighted to St Charles Bend with life-threatening injuries.

The accident is being investigated by Oregon State police, but the Sheriff's office says it appears the truck was making a left turn onto Quaale, and the motorcyclist rode into the left side of the truck, going under.

We'll keep you updated on the motorcyclist's condition.