(Gresham, OR)  --  Police in Gresham are searching for a missing 13-year-old girl.  The Gresham Police Department says Phoenyx Cannon was last seen around 6 o'clock yesterday morning near Northeast 82nd Avenue and Sandy Boulevard, about an hour and a half after leaving her home near Southwest 33rd and Emerald Avenue.  Police say she does not have a cell phone or any money.  Family members say she's on the autism spectrum at a high-functioning level.  Anyone with information is urged to contact police.