Some claim Liston was murdered. There are several theories as to why: (1) publicist Harold Conrad and others believed Liston had been deeply involved as a bill collector of a loansharking ring in Las Vegas. When he tried to muscle in for a bigger share, Conrad thinks his employers got him very drunk, took him home and stuck him with a needle. (2) Professional gambler Lem Banker insists that Liston was murdered by drug dealers with whom he'd become involved. Banker said he was told by police that Liston had been seen at a house that would be the target of a drug raid. Banker said, "Sheriff Lamb told me, 'Tell your pal Sonny to stay away from the West Side because we're going to bust the drug dealers.'" Banker later learned that the police told Liston the same thing to his face. He apparently was at the dealers' house shortly before they got busted. Because of that, the dealers may have thought Sonny ratted on them and they shot him with a hot dose as retribution. (3) The mob promised Liston some money to throw the second Ali fight, but they never paid him. As the years passed and Liston's financial situation worsened, he got angry and told the mob he'd go public with the story unless they gave him the money. That got him killed. (4) Liston was supposed to take a dive when he fought Chuck Wepner 6 months earlier, and killing him was payback for his failure to do so.