A Limerick man was seriously injured when his snowmobile crashed on Sokokis Lake in Limerick Sunday, one of four snow mobile accidents that took place after dark across the state this weekend.

The Maine Warden Service said speed was a factor in three of the crashes.

John Ferguson, 50, was traveling west in dense fog when he crashed into the shoreline near Philpot’s Landing at 1:30 a.m.

Ferguson was thrown from the machine, falling against a shed near a camp.

His brother in-law, Charles Pelligrino of Limerick, found Ferguson who is being treated at Maine Medical Center in Portland. The warden service said speed was a factor in the crash.

Ryan Rodgers, 28, of Caribou was seriously injured Saturday when he collided with a moose on the Interconnecting Trail System 83 in New Sweden at 5:15 p.m.

He was traveling with a group of nine snowmobiles. He is being treated at Eastern Maine Medical Center in Bangor. The moose was euthanized.

John Morris, 37, of Eustis was seriously hurt when his snowmobile collided with a vehicle that had rolled over on Airport Road in Eustis at midnight Saturday.

Morris is being treated at Central Maine Medical Center in Lewiston. Speed was a factor in the crash, the Maine Warden Service said.

David Willard, 25, of Oakland, and his passenger, Kenneth Cormier, 47, were treated for moderate injuries at Maine General Hospital in Waterville after being thrown from the snowmobile after hitting a mound in a field off Stanley Hill Road in China at 2 a.m. Sunday.

The warden service said speed was a factor in the crash.