Authorities say two groups of snowmobiles were riding a trail when the leaders from each group collided at a sharp corner.
Officials say a freshman at Oakland University has died following a weekend snowmobiling accident.
Authorities say separate snowmobile crashes in northern Michigan have claimed the lives of two men.
Authorities say a snowmobiler is missing after going over an embankment and falling about 100 feet into a western Michigan river.
Authorities are investigating a snowmobile accident that killed a Michigan man in central Wisconsin.
A Traverse City man has been killed after the snowmobile he was operating slammed into trees in Northern Michigan.
Authorities say two people have died in separate snowmobile crashes in Michigan in recent days.
Authorities in the Upper Peninsula say an Illinois man was speeding on a snowmobile when he left a road and hit a tree.
West Michigan authorities say speed may be a factor in the death of a 65-year-old Lake County man whose snowmobile struck a tree.
Authorities say a 72-year-old woman from Brighton has died following a snowmobile rollover in the northern Lower Peninsula.