TULSA, Okla. (AP) — An Oklahoma prosecutor has asked a judge to order an 18-year-old man accused of killing his parents and three siblings to undergo a full mental health evaluation with a doctor chosen by prosecutors.

Tulsa County District Attorney Steve Kunzweiler said after a closed-door hearing Tuesday in the case of Michael Bever that the defendant's attorneys have submitted a psychological report from their doctor and that the state should get to conduct its own inquiry, but that Bever, who was 16 at the time of the attack, refused to participate.

The judge will rule on the request at a...