GRETNA, La. (AP) — The Jefferson Parish District Attorney's Office says a suspect convicted in the killing of one man and the attempted killing of that victim's teenage nephew has been handed a life sentence — plus 40 years.

Twenty-one-year-old Ivory Franklin II was sentenced Friday in Gretna. He got the life sentence for second-degree murder, plus 40 years for attempted second-degree murder.

Prosecutors said Franklin shot 18-year-old Reginald Black in the back of the head as they walked along a Harvey drainage canal. And he tried to kill a witness, Black's 15-year-old nephew.

District Attorney Paul Connick's news release said Franklin had accused the teen of horseplay with the handgun, resulting in Black being shot. But a Jefferson Parish jury rejected the defense assertion and convicted Franklin on June 9.