Following the Tombstone shootout, Virgil Earp was maimed by hidden assailants while Morgan Earp was murdered. Unable to obtain justice in the courts, Wyatt Earp took matters into his own hands. As the recently appointed deputy U.S. marshal, Earp formally deputized Holliday, among others. As a federal posse, they pursued the outlaw Cowboys they believed were responsible. They found Frank Stilwell lying in wait as Virgil boarded a train for California and Wyatt Earp killed him. The local sheriff issued a warrant for the arrest of five members of the federal posse, including Holliday. The federal posse killed three other Cowboys during late March and early April 1882, before they rode to the New Mexico Territory. Wyatt Earp learned of an extradition request for Holliday and arranged for Colorado Governor Frederick Walker Pitkin to deny Holliday's extradition. Holliday spent the few remaining years of his life in Colorado, and died of tuberculosis in his bed at the Hotel Glenwood at age 36.