Here is the latest Michigan news from The Associated Press at 3:40 p.m. EST

KALAMAZOO, Mich. (AP) — A Michigan prosecutor says he still doesn’t know why a man randomly killed six people in between driving for Uber in the Kalamazoo area in 2016. Jason Dalton pleaded guilty to murder and attempted murder on Monday, a day that had been set aside for jury selection in his trial. Kalamazoo County’s prosecutor says the motive is a “key question” that haunts investigators. Dalton told police that the Uber app was controlling him on the day of the shootings.

FLINT, Mich. (AP) — Michigan’s former drinking water regulator has pleaded no contest to a misdemeanor in the Flint water investigation. It’s a break for Liane Shekter Smith, who was facing felony charges, including involuntary manslaughter, in an investigation of Flint’s lead-tainted water and a Legionnaires’ disease outbreak. Smith pleaded no contest to disturbance of a lawful meeting and agreed to testify against others if necessary. Special prosecutor Todd Flood praised her “candor and truthfulness.”

LANSING, Mich. (AP) — Health officials in Michigan are warning that a virus that causes vomiting, diarrhea and stomach cramping is making its rounds. Michigan’s Health and Human Services department has identified increases in norovirus activity, which often peaks during the winter. The viruses also can cause low-grade fever, headache, weakness and muscle aches. Symptoms can begin as early as 12 hours after exposure to the virus or as late as 72 hours.

LEXINGTON, Ky. (AP) — The death of a Michigan family of five in a vehicle crash in Kentucky has devastated their relatives and friends. Habib Abbas of Dearborn, a cousin of the father, told the Detroit News that when he first heard about it he didn’t believe it and went about his day.