BISMARCK — The 42-year-old son of U.S. Sen. Kevin Cramer was charged Thursday with manslaughter and fleeing an officer after a police pursuit ended in a crash that killed a North Dakota sheriff's deputy who had just laid a tire deflation device on the road and was taking cover behind his squad car, according to court documents.

Ian Cramer, of Bismarck, was traveling over 100 mph and already had two flat tires when he slammed head-on into Deputy Paul Martin's squad car on Wednesday, pushing it “directly into Martin’s person and launching him for about 100 feet,” according to charging documents. Martin, 53, was killed.