A man has been sentenced to life in prison after pleading guilty in the shooting death of a 15-year-old boy whose body was found on fire in northeastern Oklahoma.

District Attorney Jack Thorp says 23-year-old Joshua Herrington pleaded guilty to first-degree murder on Monday in the death of Brennon Davis.

Davis' bullet-riddled body was found burning on Jan. 11, 2017, near Fort Gibson Lake, 48 miles (77 kilometers) southeast of Tulsa. Authorities used dental records to identify his remains.

Thorp says Herrington pleaded guilty after the victim's family approved. Defense attorney Misty Fields says Herrington pleaded guilty in part to spare Davis' family from hearing painful testimony about the details of his death.

Thorp says a co-defendant, 24-year-old Cody Thompson, is scheduled to be tried for first-degree murder in October.