Niagara Regional Police say a man and woman are dead after the motorcycle they were riding struck a Jeep west of St. Catharines Wednesday night.

Police said a 31-year-old man from Grimsby and 38-year-old Lincoln woman were pronounced dead on the scene after the Suzuki motorcycle they were riding struck a Jeep Cherokee at 7th Street and 3rd Avenue Louth in St. Catharines.

Police said the Jeep was stopped and attempting to make a left turn onto Third Avenue Louth, when the motorcycle collided with the Jeep's front right corner. The crash ejected both occupants of the motorcycle and caused the Jeep to roll over.

The driver of the Jeep, identified as a 20-year-old female from St. Catharines, remained at the scene. She was treated at a hospital in St. Catharines for serious injuries and has since been released.

Police are still investigating the cause of the collision and closed the intersection for several hours.

Anyone with information about this collision is asked to contact police at 905-688-4111, ext. 5500.