Six high school students were killed in a crash in Tishomingo, Oklahoma on Tuesday when their vehicle collided with a semi-truck, local authorities said. Sarah Stewart, a spokesperson for the Oklahoma Highway Patrol (OHP), told multiple news outlets that the students, all girls, died after their “small passenger vehicle” struck the semi-truck in the rural city about 120 miles south of Oklahoma City at 12:30 p.m. local time. The spokesperson said she did not have the exact ages of the students. The condition of the semi-truck driver wasn’t immediately clear. Stewart said the two vehicles collided at the intersection of U.S. Highway 377 and State Highway 22. The girls were eastbound on Oklahoma 22 when their vehicle was struck by a rock hauler that was approaching from the east on U.S. 377, OHP Trooper Shelby Humphrey told KXII-TV of nearby Sherman, Texas. Maps show the intersection is at the end …