(Aloha, OR)  --  The Washington County Sheriff's Office is investigating a drive-by shooting that left a man dead in Aloha [[ ah-LOW-uh ]].  Deputies say the man was shot around 8:50 yesterday morning as he walked along Southwest Blanton Street near 167th Avenue.  The victim died at the scene.  Witnesses told authorities they saw a dark-colored sedan heading east down Blanton after the shooting.