A 15-year-old male has been charged in the shooting death of Keith Adam Joseph, 38, of Washington. The teen was charged with second-degree murder, juvenile in possession of a handgun. According to a news release from St. Landry Parish Sheriff Bobby Guidroz, deputies were dispatched to the 300 block of East Saint Mitchell Street in Washington at 11:50 p.m. Dec. 31. The victim was involved in a…