(Gresham, OR)  --  Police in Gresham are searching for a missing 12-year-old boy.  The Gresham Police Department says Joshua Frison went missing last night after leaving home to visit a friend's house near Southeast 182nd Avenue and Southeast Yamhill Street.  He's described as five feet tall and 95 pounds with dark brown hair.  Family members also say he was wearing a red shirt with black athletic pants.