Career
Killeen owned and managed a bar called the Transit Cafe on West Broadway in South Boston. His organization included Whitey Bulger and William South. O"Sullivan. He engaged in a turf war with South Boston"s Mullen Gang.
He left the house saying he was going to fetch a newspaper but in reality was going to get his son"s present, a toy fire engine, in the trunk of his 1971 Chevrolet Nova.
As Donald went to fetch a gun stashed underneath the driver"s seat of his car, a gunman pulled open the car door and jammed the machine gun in his face before squeezing off fifteen rounds. Bulger was accused of the murder by longtime rumor.
However, former Mullen gang member Patrick Nee stated that the murder was actually committed by Mullen enforcer Jimmy Mantville. A voice called him over to the car and said, "lieutenant"s over.
You"re out of business, no more warnings", as a threat to not try and avenge his three brother"s deaths or continue their rackets.
Kenneth would later testify at the trial of John Connolly that in the car were James J. Bulger, Stephen Flemmi and John Martorano.
