Authorities say William Dunbar was driving northbound on Rt. 73 in August when he crashed into the back of a vehicle driven northbound by Christopher Pappas, 34, of Howell. Pappas's vehicle overturned and crashed into a utility pole.
Pappas was pronounced dead at the scene.
Charges against Pappas were filed after the release of results of toxicology tests on blood drawn from Dunbar after the crash.
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