 A grand jury indicted Mulvenon for the murders, but he was found not guilty despite persuasive testimony from posse members Fairchild, McKinney and Weatherford.Six weeks later, Al Rose, participant in the Graham faction, was killed by eight unknown men wearing long coats and masks near the Houldon ranch belonging to the Grahams.It was very likely during this stage that outsider and known assassin Tom Horn participated, possibly as a killer for hire, but it is unknown which side employed him, and both sides suffered several murders for which no suspect was ever identified.