Authorities revealed new details Wednesday afternoon about the violent Santa Clarita crash involving a city transit bus, an overturned semi truck and two other vehicles that left 13 people injured.

According to the Santa Clarita Valley Sheriff’s Station, the driver of a semi truck hauling a full load of gravel may have been traveling as fast as 70 mph when the vehicle approached a yellow light at the intersection of Golden Valley Road and Centre Pointe Parkway around 9:30 a.m.

Investigators said the driver then attempted to make a right turn to avoid running the red light before crashing into the bus and two passenger vehicles.

“[The driver] tried to make a right-hand turn to avoid running the red light and then crashed into the bus and the other two passenger vehicles,” Capt. Brandon Barclay of the Santa Clarita Valley Sheriff’s Station told KTLA.

Officials noted that the speed limit on Golden Valley Road is 50 mph.

Sky5 aerial footage showed the heavily damaged Santa Clarita Transit bus pushed onto a curb while the semi truck overturned nearby, and another vehicle appeared pinned beneath the front right side of the bus.

“When you look at it, it looks like a scene from Universal CityWalk,” Barclay said.

Authorities said 13 people were injured in the crash.

One passenger seated in the back of the bus had to be freed using the Jaws of Life and remained hospitalized in critical condition Wednesday afternoon, KTLA’s Angeli Kakade reported.

Seven additional people were transported to hospitals while five others declined medical treatment at the scene.

“You have a bus that was hit by a semi truck, so it’s very impactful for this community,” Barclay added.

Former Santa Clarita transit bus driver Darryl Richardson said he was stunned when he saw the aftermath of the crash.

“I know how a person feels to see a big old truck coming right at you,” Richardson told KTLA. “Thank God if it had broadsided the driver, we’d be talking about a different conversation right now.”

The City of Santa Clarita said road closures around the crash scene were expected to continue for several hours as deputies investigated what led up to the collision.

All directions of Centre Pointe Parkway between Golden Valley Road and Ruether Avenue remained closed Wednesday afternoon. Eastbound Golden Valley Road was also shut down from Robert C. Lee Parkway to Centre Pointe Parkway.

Drivers were urged to avoid the area and use alternate routes.

The crash remains under investigation.