OKLAHOMA CITY (AP) — Police in an Oklahoma City suburb were justified when they fatally shot a black teenager who was naked and unarmed, an attorney for the city argues in a response to a civil rights lawsuit filed by the teen's parents.

The parents of Isaiah Mark Lewis contend in their federal lawsuit that Sgt. Milo Box and Officer Denton Scherman used excessive force and acted "unnecessarily and unjustly" when they hit their 17-year-old son with a stun gun and then fatally shot him on April 29 after he allegedly broke into a home.

In a response filed Wednesday on behalf of the city, attorney...