Authorities are investigating a rollover accident that left two illegal immigrants in critical condition near Falfurrias.
It all happened on State Highway 285 three miles west of Falfurrias around 8 a.m. Thursday.
Texas Department of Public Safety state troopers, Brooks County Sheriff TMs Office deputies and Border Patrol agents were among emergency workers who responded to the accident.
Border Patrol officials told Action 4 News that a 1998 Chevy Astro van carrying 26 illegal immigrants was involved in a rollover accident.
Investigators detained five Mexican nationals and four Guatemalan immigrants at the scene.
Four of those immigrants were hospitalized with two of them listed in critical condition due to trauma to the head.
Authorities are searching the brush in order to find the other 17 people who were inside the mini-van.
State troopers continue to investigate the accident.