Paramedics provided emergency medical care to a total of 13 patients, BC EHS said.

Two patients were transported to hospital in serious but stable condition, including one by air ambulance, BC EHS said.
Eleven other patients were transported to hospital in stable condition.
UPDATE #2, 7:45 P.M.: Surrey Police spokesperson S/Sgt. Lindsey Houghton says police and traffic control are working to clear the significant backup of vehicles along the highways near today’s crash.
He says SPS is working with Surrey Fire Services, BCEHS, Delta PD, and the City of Surrey to manage traffic and clear it safely.
Tow trucks are working their way to the vehicles that are not considered drivable. The road is expected to be closed for a few hours.
UPDATE, 6:40 P.M.: Surrey Police Service has released a statement saying both northbound and southbound lanes of Highway 99, just east of the Hwy. 99/91 interchange, are currently closed due to a multi-vehicle collision involving a semi-truck, a trailer, a bus and several vehicles.
Police in Surrey say it is not known whether there are any serious injuries.
Surrey firefighters and BC EHS paramedics are on scene.
Police say it is likely that the highway will be closed for several hours as authorities investigate the incident, collect evidence and clean up the scene.
Original story:
SURREY – A multi-vehicle accident has closed southbound Highway 99 near Delta Friday afternoon.
DriveBC reported at 4:38 p.m. Friday (oct. 16) that Hwy. 99 south of Highway 91 had left lanes in both directions blocked. It later revised the traffic advisory to say Hwy. 99 was closed southbound.
The Pulse Point indicates the accident happened at 4:25 p.m.
Harry Jung told Fraser Valley Today via Facebook Messenger Friday evening he was biking along the Mud Bay Trail when he witnessed the aftermath of the accident. He estimated there were possibly four vehicles involved, including a tractor-trailer, a bus, and a red Tesla involved.
The tractor-trailer involved appears jack-knifed across one direction of the highway. Jung said fluid on the highway came from the tractor-trailer.
DriveBC says motorists should expect delays due to major congestion, and there is presently no estimated time of reopening for southbound Hwy. 99.