A ride at Cedar Point Amusement Park malfunctioned Friday, sending several riders into the water.

The incident happened Friday on the "Shoot The Rapids" water ride. According to Cedar Point officials, one of the boats rolled backward down a hill and flipped over into the water. Six of the seven passengers were treated at the park. The seventh victim was treated at a nearby hospital and later released.

It is still unclear what caused the problem. The ride will remain closed until park officials and state inspectors complete a review.