FENTON TOWNSHIP, Mich. (AP) — Police say an off-duty Genesee County Sheriff's sergeant has been killed after leading police on a chase that reached speeds of 100 miles an hour.

Genesee County Sheriff Robert Pickell tells The Flint Journal that 34-year-old Sgt. Rick Bennett died late Wednesday when he was ejected from his pickup truck after rolling over while trying to exit southbound U.S. 23.

Pickell says police were investigating a report of smashed windows at Bennett's estranged wife's home. When officers in Durand stopped him for questioning, Bennett backed into a police car before driving away.

Bennett had been with the sheriff's office for about 11 years and was the grandson of former Flint Mayor Don Williamson.

Pickell said the incident was out of character for Bennett.

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Information from: The Flint Journal, http://www.mlive.com/flint