The crash scene is about 30 miles southwest of San Antonio. Tellez says the van was carrying 16 members of a Fort Worth-area family to Mexico for vacation when the crash happened.
Troopers say those killed were a 15-year-old boy and a male adult. The 14 others injured were taken to different San Antonio hospitals. Three were injured badly enough to be airlifted to hospitals.
No identities have been released.
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