David Delong Charged in Brutal Sledgehammer Killing of Co-Worker Amber Czech in Cokato, Minnesota
David Bruce Delong, 40, has been charged with second-degree murder after allegedly killing his 20-year-old co-worker, Amber Mary Czech of Hutchinson, with a sledgehammer at a Cokato manufacturing plant. Authorities cite premeditation and surveillance footage as key evidence in the shocking workplace homicide.