Four people were injured, including one who was sent to University of Maryland Shock Trauma, after a five vehicle accident Saturday night.

The vehicles collided near the intersection of Belair Road and Klosterman Avenue around 9 p.m., said Cpl. Robert Carmen, a Baltimore County police spokesman.

One of the drivers was transported to Maryland Shock Trauma. Three others were sent to Johns Hopkins Bayview Medical Center. A fifth person refused medical treatment, Carmen said.

An investigation into the cause of the accident was ongoing as of 11 p.m. Saturday, he said.