Michigan State Police are investigating after a man was shot and killed by police Tuesday morning in Eaton County, near Lansing, Mich. Authorities say the shooting happened after the man stabbed another man who had challenged him about not wearing a mask at a store, and then tried to attack police when he was pulled over. The shooting happened in a neighborhood in Delta Township about 30 minutes after the stabbing outside a Quality Dairy store, state police Lt. Brian Oleksyk said.