A local man was arrested late Wednesday after allegedly making threats to a woman at a Walnut Street residence while armed with an AR-15 assault rifle as he was reportedly looking for his ex-girlfriend. Justin Mikal Graves, 28, who lists a Moore Street address, was taken into custody shortly after 10 p.m. outside the Walnut Street residence and later charged with first-degree terroristic threatening, a felony punishable by up to six years in prison.