neighbor and dismembering his body pleaded no contest to second- degree murder. 51-year-old david stubblefield entered the plea in exchange for a sentence of 40 years to life in state prison. investigators say in march of last year, he used pepper spray on his elderly neighbor, benjamin roybal, then shot him. prosecutors say he then cut up the body, and try to get rid of it, using chemicals. authorities say that he and his 77-year-old neighbor, had been involved in a dispute over the price of a space heater at the time. >>> this -- the family of stephon clark is calling on federal and state prosecutors to investigate his death at the hands of sacramento police. park was unarmed and in his grandmother's backyard when officers fired 20 shots gilding him. -- killing him. police say they thought he was holding a gun when they opened fire. >> i want justice! i want justice for stephon clark! please, give us justice! >> reporter: an emotional plea today for him, from his grandmother, asking for justice. after he was killed by sacramento police eight days ago. police released this videotape, showing