An Oak Grove teen was involved in a Cass County accident Thursday night. According to the Highway Patrol, 30-year-old Mohammed Alghamdi of Saudi Arabia was northbound on Interstate 49 at the Grand River Bridge when he lost control of his vehicle and struck a concrete barrier. Alghamdi was then struck by 17-year-old Allie Shanahan of Oak Grove. Shanahan was uninjured. Alghamdi was taken to Belton Regional Hospital with moderate injuries.