(Beaverton, OR)  --  Authorities say a group of kids found a 15-year-old Beaverton boy who had been reported missing.  Officials say the kids spotted Elvin Dejesus Gomez Mendez yesterday in the 62-hundred block of Southwest Hall Boulevard, not far from his home.  The kids then flagged down members of Washington County Search and Rescue, who confirmed Elvin's identity with Beaverton police.  Authorities tell KOIN-TV that Elvin told the kids a bag had been placed over his head and he had gotten hurt, but police say no injuries were found during an examination of the boy.