 Josephine Earp wrote that when she arrived in Arizona, she learned that "some renegade Yuma-Apaches had escaped from the reservation to which they had been consigned and had returned to their old haunts on the war-path" and that Sieber was tracking the escaped Apache.She said Sieber and his scouts led her stagecoach and its passengers to a nearby adobe ranch house where they remained until the Indians were captured.In February, April, and May 1877, Sieber acted as a guide for Pima County Marshal Wiley Standefer, who was pursuing outlaws in the region.