Hood River County Sheriff’s deputies are searching for a suspect in an assault early Thursday morning in Cascade Locks.  According to the Sheriff’s Office, a 69-year-old man was walking his dog along the 100 block of Wa Na Pa Street at about 3 a.m. Thursday when he was struck from behind by a blunt object.  The suspect fled the scene before the victim could obtain any identifying information.  The victim was able to get to his home where the call to 911 was made.  He was treated for injuries sustained in the assault at a local hospital and was later released.  Responding deputies canvassed the area but did not find any potential suspects.  The investigation is ongoing, and anyone with information about this crime should contact the Hood River County Sheriff’s Office Tip Line at 541-387-7077.