TULSA, Okla. (AP) — An Oklahoma prosecutor says he has not decided whether to try a white former Tulsa police officer a fourth time on a murder charge in the fatal shooting of his daughter's black boyfriend.

Tulsa County District Attorney Steve Kunzweiler said Monday he remains disappointed a third mistrial was declared in the trial of Shannon Kepler and is exploring "all options" in continuing prosecution of Kepler prior to a scheduled Aug. 1 hearing.

Kepler was charged in the August 2014 fatal shooting of 19-year-old Jeremy Lake shortly after Lake began dating Kepler's 18-year-old daughter....