The Cochise County Sheriff's Office is seeking information about men who were seen at Chiricahua National Monument in the days leading up to an attack on a park service employee.
The sheriff's office released photos of the men who are considered persons of interest Tuesday.
Karen Gonzales, a National Park Service employee, was found unconscious in a picnic area restroom at the park on Aug. 28.
Her government vehicle was found several hours later near Douglas by tracking her cellphone which was still inside.
The sheriff's office released a surveillance photo of a suspect in the beating on Saturday.
Anyone with information about the men is asked to call the Cochise County Sheriff's Office at 520-432-9501.