Inattentive driving may be to blame for a crash Friday evening.
Dane County Sheriff's Department Sergeant Michelle Shelhamer says two vehicles were involved. One was northbound on highway MM and appears to have left the roadway. She says the driver over corrected and the vehicle struck a southbound vehicle head on.
There were two passengers in the southbound vehicle, and one in the northbound vehicle. In all, two people suffered minor injuries, a third has life threatening injuries.