(CNN) A Tuesday night group bicycle ride turned to tragedy as a driver hit a group of cyclists, killing five and seriously injuring four others, according to authorities.

The riders were hit by a blue Chevrolet pickup truck while riding on the shoulder of a local street, Kalamazoo County Prosecuting Attorney Jeffrey Getting said.

The driver was a 50-year-old man from western Michigan. He was found a short distance away from the crash police and is in custody. Charges will be filed after police reports are completed, according to Getting.

The riders were hit by a blue pickup truck.

He said that three separate police agencies received phone calls prior to the crash regarding the truck's erratic driving.

Those calls came in at 6:08 p.m. ET, 6:13 p.m. ET, and 6:21 p.m. ET.

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