Other criminal groups active at the time included the Westside Mob, a combination of Wyandotte area mob boss Joseph Tocco, known as "The Down River Beer Baron" and the La Mare Gang based in Hamtramck, led by Chester "Big Chet" La Mare. Subtle rivalries continued throughout the 1920s between the various Detroit Mafia factions, but for the most part the top Mafia groups maintained a working alliance under Sam Catalanotte. It was not until Catalanotte died and more serious Mafia rivalries and conflicts originally based in New York between the nation's two most powerful Mafia bosses turned into an all out war and drew in various Mafia leaders and their groups from around the country, including those in Detroit.