Rocky Boy police are asking the public's help in locating Robert Grant Alexander, 57, who has been missing about a week. He is also known as Robbie Alexander.
Police led a search of the Sandy Creek area in the Bear Paw Mountains for much of the last week without success, Chief Steve Henry said.
Henry said Alexander's wife called police early Monday to report him missing.
Alexander's car was found on Sandy Creek Road on the south end of Rocky Boy's Indian Reservation, but there has been no sign of him.
Alexander was described as 5-foot-9-inches, with brown eyes and brown hair. He is about 19...