A U.S. Border Patrol agent and two other people have died after a sport utility vehicle collided with a wild hog and swerved into the agent's vehicle in Southwest Texas, authorities said.

The accident happened late Monday on a rural road near Uvalde, about 110 miles southwest of San Antonio. Texas Department of Public Safety spokesman Sgt. Conrad Hein said Tuesday that a preliminary investigation indicates a Ford Expedition collided with the hog, which caused the vehicle to swerve into oncoming traffic and hit a Mercedes SUV head-on.

The Expedition's driver, 51-year-old Ruby Garza, and the driver of the Mercedes, 27-year-old Border Patrol Agent Antonio Cordova, were pronounced dead at the scene. A passenger in the Expedition, 51-year-old Julia Vasquez, died later at a hospital.

Border Patrol officials in Del Rio, Texas, told The Associated Press on Wednesday that Cordova was driving home after finishing a shift at the station in Uvalde.