MARIANNA, Pa. (AP) — Authorities say an ATV rider was killed when he was thrown off it and struck by another vehicle on a road in western Pennsylvania. Marianna police say borough resident Tyler Raymond Markoff was driving his ATV on Rosewood Avenue when it overturned around 5:15 p.m. Wednesday as he tried to make a right turn. Markoff landed in the opposite lane of traffic and ended up in the path of the other vehicle. Markoff was taken to a hospital but later died there. No other injuries were reported.