Now the subjects of a massive manhunt and media campaign, Hamilton and Dillinger made a discreet visit to Hamilton's sister's home in Sault Ste. Marie, Michigan, on April 17. After returning to Chicago, the gang retreated to the Little Bohemia resort near Rhinelander, Wisconsin. On April 22, the place was raided by the FBI under the direction of Melvin Purvis, who had received a tip about the gang's whereabouts from Henry Voss, a friend of Emil Wanatka, Little Bohemia's owner. Unfortunately, the raid did not go as planned: the agents mistakenly opened fire on a car that contained three local work camp employees Eugene Boisneau, John Hoffman and John Morris after thinking they were gangsters. Boisneau was killed and Hoffman and Morris were both wounded.