Iowa crash involving off-road motorcycle kills

Authorities are investigating an off-road motorcycle crash that killed one person in eastern Iowa.The Linn County Sheriff's office says the accident happened around 11:30 a.m. Sunday near Troy Mills.Paramedics and sheriff's deputies responded to the crash and found that a dirt bike had struck the back of a skid loader.Authorities say the dirt bike's driver died at the scene. That person's name wasn't immediately released Sunday.