In the early 1970s, another mob war was taking place in South Boston between two other Irish-American gangs: the Killeen Gang, which controlled bookmaking and loansharking, and the Mullen Gang, which was made up of thieves. In 1971, Killeen enforcer Billy O'Sullivan was shot and killed outside his house. The following year, Donald Killeen was murdered and the remaining members of both organizations were absorbed into the Winter Hill Gang. One of Killeen's key associates was Whitey Bulger. In 1973, Bulger was appointed by Howie Winter to operate the South Boston rackets. Throughout the remainder of 1970s, Bulger used his influence to have rival mobsters murdered. Among his victims were Spike O'Toole, Paul McGonagle, Eddie Connors and Tommy King.