Several people were injured when a horse trailer illegally shuttling 18 unauthorized immigrants overturned on Saturday morning.

The incident occurred around 11.50am in the westbound freeway lanes west of Crestwood Road, according to The San Diego Tribune.

Authorities said that the accident occurred when a female motorist hauling a two-axle, four-horse trailer behind her Ford F-250 began to swerve uncontrollably as she cruised the fast lane on the highway.

Authorities said that the accident occurred when a female motorist hauling a two-axle, four-horse trailer behind her Ford F-250 began to swerve out of control

The incident occurred around 11.50am in the westbound freeway lanes west of Crestwood Road near in southern California

Video courtesy KGTV

CHP Officer Travis Garrow said that's when the trailer separated from the truck and tipped over.

The majority of the people inside the trailer were able to emerge from the wreck and scatter into the nearby brush as others laid injured on the side of the road, according to ABC affiliate Channel 10 News.

CHP Officer Travis Garrow said that's when the trailer separated from the truck and tipped over

The Border Patrol was able to capture the undocumented immigrants who had fled the scene following a brief search, said Border Patrol Agent Eduardo Olmos.

It remains unclear if the unidentified driver was detained by law enforcement following the crash.

Two women were air-lifted to a nearby hospital for treatment while four men were transported by automotive ambulance.

According to the Tribune, the injuries sustained in the crash were described as minor to moderate.

It remains unclear how the individuals were able to enter the United States. T nationalities of the undocumented immigrants were also unavailable.

There were no horses inside the trailer, CPH officials told the Tribune.