Vincent “Mad Dog” Coll once approached another notorious Irish gangster, Jack “Legs” Diamond, and tried to form an alliance with him. Coll proposed a joint venture with Diamond to smuggle beer and whiskey into other states far from New York City. “Mad Dog” told Diamond they could make a fortune. However, Diamond was cautious in his dealings with Coll, since he knew Coll had once accepted a Mafia contract to assassinate him. Before the new partnership could be created, New York State police captured most of the Coll gang, and a few days later Coll himself and Legs Diamond were captured.