(Gresham, OR)  --  Police are investigating a shooting that left a nine-year-old boy and his 29-year-old mother critically wounded in Gresham.  Authorities say Cherie Thompson and the boy were found in their Northeast 183rd Street apartment with gunshot wounds around 4:30 yesterday morning, and were taken to a hospital.  Police believe it was a targeted shooting, but no suspects have been identified.