BISBEE, Ariz. -- Authorities are seeking information about three men seen at Chiracahua National Monument in the days leading up to an attack on a National Park Service employee in Bisbee.
The Cochise County Sheriff's Office released photos Tuesday of the men considered persons of interest in the case.
The agency released a surveillance photo Saturday of a possible suspect in the beating.
A 59-year-old National Park Service employee remains hospitalized after the Aug. 28 attack.
Authorities say Karen Gonzales was found unconscious from head trauma in a picnic area restroom at Chiricahua National Monument.
Her government vehicle was found hours later about 40 miles away in Douglas by tracking her cellphone, which was still inside.
They say Gonzales is a uniformed maintenance worker with the Park Service and a longtime seasonal employee.