A U.S. Immigration and Customs Enforcement officer shot and killed a man in Houston after he attempted to evade arrest in his vehicle during an operation Tuesday, the agency said.

The Department of Homeland Security said in a statement that the man, a Mexican national, ignored commands to stop and attempted to ram an agent who fired his weapon in self-defense. The man was targeted in an operation because he was living in the country without legal permission, according to the department, which oversees ICE. The man’s car struck an ICE vehicle, the department added.

The statement identified the man as Lorenzo Salgado Araujo, and said he died at a hospital.

The FBI’s Houston field office is investigating a potential assault on a federal law enforcement officer, said spokesperson Connor Hagan. In addition, representatives of the office’s evidence response team responded to the shooting at the request of DHS to process the scene, he said.

The death drew immediate calls from some local Democratic officials and immigrant rights groups for an independent investigation.

The shooting comes amid a newly intensified push by the Trump administration to carry out its mass deportations agenda. During the five-day period at the end of June, ICE arrested more than 10,000 people. The figures indicate that while the administration is no longer cracking down on individual cities, the arrests continue and are surging.

Texas’ largest city has experienced heightened enforcement operations since the crackdown began last year.