Michigan Attorney Genera Dana Nessel

John Geddert, 63, who coached the women's gold medal team in the 2012 Summer Olympics, was charged Thursday with two dozen criminal counts. An official says he took his life later the same day.

At least a dozen people died and more than 80 people fell ill after untreated water from the Flint River caused lead to leach from old pipes, poisoning the water system city residents relied on.

The robocalls came from a nonexistent group and falsely warned recipients that voting by mail would result in being "finessed into giving your private information to the man."

Prosecutors say the original criminal investigation into Flint's drinking water scandal was compromised by a failure to pursue all available evidence.