QUEEN CREEK, Ariz. - Six people were involved in a serious crash between two vehicles in Queen Creek Monday night, according to the Maricopa County Sheriff's Office.

Four people, including two children, sustained serious injuries. A man sustained life-threatening injuries, the sheriff's office said.

Deputies said the cause of the accident, at Combs and Rittenhouse roads, is unknown.

The intersection will be closed for a few hours as the sheriff's office investigates.