Under state-appointed managers, the government of Flint, a majority-Black city, switched its water supply from Lake Huron to the Flint River to cut costs in 2014.Former state health director Nick Lyon, former state medical executive Eden Wells, former Governor Rick Snyder staffers Richard Baird and Jarrod Agen, former state health department employee Nancy Peeler and former Flint emergency managers Gerald Ambrose and Darnell Earley were relieved of their charges.Register now for FREE unlimited access to Reuters.comThe decision stems from a June ruling by the Michigan Supreme Court that so-called "one-person grand juries" do not have authority to bring indictments, Judge Elizabeth Kelly of the 7th Judicial Circuit Court said in dismissing the charges, though they have power to subpoena witnesses and issue warrants.State prosecutors decided to employ a rarely used method of obtaining the indictments, presenting evidence in secret before Genesee County Circuit Court Judge David Newblatt in what is known as a "one-man grand jury."In November, a federal judge signed off on a $626 million partial settlement for victims of the contamination, with most of the money earmarked for children."