COLUMBUS, Ind.—A Flat Rock man has died in a motorcycle crash in Columbus. According to the Bartholomew County Sheriff’s Department, the accident occurred when Mike Diewert, 54, struck another vehicle that was attempting to pass him on East 400S. Diewert was traveling at a low rate of speed when he made contact with the other vehicle. He was flown by lifeline to Indiana University Health Methodist Hospital where he later died from his injuries.