However, when Wyatt Earp learned of the coroner's jury findings, he took action on his own. After escorting the still recuperating Virgil to the rail road in Tucson, he found Frank Stilwell lying in wait and killed him. Assembling a federal posse, he set out to find and kill the remaining Cowboys whose friends' alibis or legal technicalities had gotten them off. Spence owned a ranch and woodcutting camp at South Pass in the Dragoon Mountains, where he employed Indian Charlie Cruz. Cruz was the lookout during the Morgan Earp shooting. On March 20, 1882, Wyatt Earp and a federal posse arrived at Spence's camp and asked for him. But Spence had turned himself in to Cochise County Sheriff Johnny Behan figuring he was safer behind bars. When the Earp posse learned Spence was in jail, they asked about Cruz. They soon found him and killed him.