Naval Air Station Kingsville spokesman Kevin Clarke says the vehicle ran through the entry gate then collided with the base's "final denial barrier" yesterday.
Clarke told the AP Sunday that the agents suspected the occupants of the vehicle had entered the U.S. Illegally, but that it wasn't a "pursuit." He didn't know their country of origin.
US Customs and Border Protection spokesman Rod Kise says he has no information on the incident.
Clarke says three of the six injured remain hospitalized. The others are in custody.