Date of Death: Aug. 2, 1982
Manner: The Winchester resident and former President of World Jai Alai was found shot to death inside a car in Miami.
Callahan sold Jai Alai to Roger Wheeler after he became the subject of an investigation into his alleged connection to members of the mob underworld. Callahan later denied any involvement with the Winter Hill Gang in a statement to the Boston Globe.
John Martorano confessed to murdering Callahan amid concerns that he could implicate the gang in the murder of Roger Wheeler.