Five undocumented immigrants were killed and several others injured when their vehicle crashed while they were being chased by law enforcement officers.
"The vehicle was traveling around 100 miles an hour", Boyd said.
The Texas Department of Public Safety said the driver lost control of the SUV and it rolled, causing the deaths and injuries. Authorities believe the driver and one passenger are USA citizens and the 12 other passengers were undocumented immigrants, Boyd said.
"This is not unusual", Boyd said.
Dimmit County officials confirmed Sunday afternoon that five people have died in a crash involving undocumented immigrants.
The SUV was carrying 14 people ― 12 of whom were ejected upon impact.
Boyd said Border Patrol agents began chasing the SUV around noon and then Dimmit County Sheriff's deputy took over, CNN reported.
The sheriff said he didn't know where the immigrants were from. The driver was among those hospitalized and he and the passenger were in custody.
Footage of the crash showed four bodies on the ground, the charred Chevrolet and several Border Patrol vehicles at the scene, Fox 29 reported. A fifth person died at a San Antonio hospital.
The pursuit took place in Big Wells, about 130 miles southwest of San Antonio.
Boyd told WOAI a wall needs to be build because illegal immigration is "a real problem" in the area.
"We've seen this many, many times and not only in this county but other counties along the border", he said. Dimmit County is directly north of Webb County and east of Maverick County, which border Mexico.