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FREDERICK, Md. (WUSA9) -- A 42-year-old man from West Virginia was sentenced on Tuesday for manslaughter by a motor vehicle, officials said.

Joseph Grant, III, 42, was sentenced to 10 years, for 'manslaughter by motor vehicle'. The incident happened on Dec. 17, 2012 when Grant was driving a 2001 Ford Windstar van, traveling southbound on I-270 south of Bennett Creek in Frederick County, Maryland. He was travelling at a speed which was greater than reasonable for the weather and road conditions, and his car skidded off the road. The car then went through a grass median, hit a metal guardrail, became airborne and landed on top of a car on the northbound lane of I-270. That car was being driven by Peter Antony Halpert. Grant's car then rolled off the top of Halpert's car and landed into the path of a Lexus driven by Marion Barrie, officials said.

Halpert was pronounced dead on the scene, police said.

Investigation revealed that Grant was intoxicated while driving. As a result of the accident, Grant suffered a broken neck and was in a coma for 3 weeks, with no memory of the crash at all, police said.

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