FRANKFORT, Wis (WSAU)  A snowmobiler suffered a head injury on Sunday on a trail in Frankfort. The Marathon County sheriffs department says the driver struck a tree around 3am while traveling with a group near County Highway N and Huckleberry Road.

The man's been transported to St. Joseph's Hospital in Marshfield. His condition is not known, and his name hasn't been released.

Investigators say alcohol was a factor in the crash. When he's out of the hospital, the operator will be cited for OWI.