A McCurtain County man was killed late Sunday night in a single-vehicle crash. State Troopers say Shaylia Cobb, of Broken Bow, ran off the road and crashed into a tree. Her passenger, 28-year-old Anthony Yanez, also of Broken Bow, was flown to Paris where he was pronounced dead. Cobb and another passenger, 28-year-old Stphen Whitemore, Jr., suffered non-life-threatening injuries. Troopers say the crash may be alcohol-related.