A horse trailer carrying at least 18 people who entered the US illegally overturned on a Southern California highway just north of the border with Mexico, authorities said.
Several people inside the trailer were hurt in the crash on Saturday near the town of Campo, with injuries described as moderate and minor. Six patients were hospitalised, the San Diego Union-Tribune reported.
A witness told the California Highway Patrol that the two-axle trailer being hauled by a pickup truck began to fishtail and eventually tipped onto its right side along northbound Interstate 8.
Several people scrambled from the trailer after the crash and many ran away, the newspaper said. No horses were inside.
After a search of the area authorities were able to round up most, if not all, involved, said Border Patrol Agent Eduardo Olmos. CHP and Cal Fire reported 18 individuals, while Border Patrol said there were 19; the reason for the discrepancy wasn't immediately known.
Border Patrol officials said the driver of the pickup had not yet been identified and it was unclear if he or she was in custody.
Olmos said it was not yet known where the people made illegal entry into the United States.
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