Marshall County authorities are investigating the cause of a fatal Sunday morning motorcycle crash. It happened around 4:30 a.m. In the 2000 block of State Road 331, just east of Bremen, according to our reporting partners at WNDU-TV. A motorcycle driven by Stephen Kessenger, 39, of Bremen, crossed the center line, ran off the road and hit several mailboxes, according to police. Kessinger was found in the front yard of a home and pronounced dead at the scene. His bike was in the middle of the road. The crash is still under investigation, but police do not believe any other vehicles were involved. Toxicology results are pending.