Officials say six people were injured when a vehicle carrying 15 people crashed into a South Texas naval air station while being followed by Border Patrol agents.

Naval Air Station Kingsville spokesman Kevin Clarke says the vehicle ran through the entry gate then collided with the base's "final denial barrier" Saturday evening.

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 provide their country of origin.

U.S. 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.

Seven people suspected of entering the country illegally died when their pickup crashed into the air station in 2013.