(Berrien County, MI) - Alcohol is believed a factor in a man being critically injured in a single vehicle crash in Berrien County, Michigan over the weekend.

Police said the 44 year old man was speeding when he failed to negotiate a curve and struck a tree early Saturday on Glendora Road between Buchanan and Berrien Springs.

His injuries to the neck and head were described by police as life threatening. He was not responding but had a pulse at the crash site.

The driver was identified as Dennis Bogdanich from Bunker Hill, Indiana which is in the north central part of the state.  Police said he was not wearing a seat belt.

A blood alcohol level was not released.