An air ambulance was called for a patient at a serious crash involving a dump truck, an SUV, and a sedan in rural Pitt Meadows on Thursday morning. 

First responders were called to the crash at about 7:25 a.m. on Nov. 21, in the 19800 block of Old Dewdney Trunk Road. 

Maple Ridge Fire Department and BC Emergency Health Services (BC EHS) were also on scene. BC EHS Advanced Life Support extracted a trapped driver out of the sedan, according to Ridge Meadows RCMP.

Once removed from the vehicle, the paramedics performed life-saving measures on the driver before they were transported to hospital. No other injuries were sustained by other vehicle occupants.

BCEHS public information officer Rachelle Bown said paramedics provided emergency medical treatment to two patients at the scene.

"An air ambulance, four ambulances with primary care and advanced care paramedics, a paramedic specialist, and a supervisor responded to the scene," said Bown, noting that one patient went by air ambulance to hospital in critical condition. 

"The second patient was transported to hospital in stable condition,鈥� explained Bown.

The police's regional Integrated Reconstruction Analysis Reconstruction Team (ICARS) and the Commercial Vehicle Safety and Enforcement (CVSE) were also called to assist with the investigation.

Old Dewdney Trunk Road is closed between Harris Road and 203 Street in Pitt Meadows, and will remain closed for several hours as police continue to investigate, Mounties say.

Police are still seeking witnesses, dash camera footage and/or surveillance video from the area. If you have information, please contact the Ridge Meadows RCMP directly at 604-463-6251.