KANSAS CITY, Mo. (AP) — A Missouri man has been charged with shooting and killing his neighbor following an argument over lawn mowing, bringing to an end years of hostility between the two, officials said. Samuel Avery, 42, of Kansas City, was charged Monday with second-degree murder and armed criminal action in the killing of 41-year-old Warner Trotter, who was shot in his head on his front porch, the Jackson County Prosecutor’s office said. Trotter was declared dead at hospital. According to court documents, Avery called police on Sunday to report that he had shot his neighbor. Officers found Avery on his porch next door and arrested him without incident. Online court records do not list an attorney who can speak for Avery.