Dimmit County Sheriff Marion Boyd says the SUV went out of control at more than 100 miles per hour and overturned on Texas Highway 85, ejecting those inside.
The Chevrolet Suburban rolled over several times on a highway in Big Wells, Texas, around 12 p.m. local time on Sunday following a high-speed pursuit, officials told reporters.
The crash Sunday morning on Highway 85 in Big Wells was the result of a chase that involved Border Patrol agents and Dimmit County deputies.
This SUV was packed with undocumented immigrants as it crashed trying to escape border patrol.
Two of the vehicles stopped and arrests were made from each vehicle, according to the U.S. Border Patrol.
The passenger, also believed to be a US citizen, is now in custody.
A total of 14 people were in the vehicle, including the driver, who was not seriously hurt.
Four people died at the scene and a fifth died later, KSAT 12 television of San Antonio reported.
The chase started when a border control agent spotted three vehicles traveling together and became suspicious of smuggling. Dimmit County is directly north of Webb County and east of Maverick County, which border Mexico.
"I think we need more boots on the ground, we need more patrol", Boyd said. "This is a flawless example of why our borders need to be secure", he added.
Boyd said there needs to be a wall built because this is a "real problem" in the area.
Boyd said the driver was known to police, and had been seen in the area 'last week, ' either scouting the area or looking for immigrants to smuggle.
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