A U.S. Border Patrol agent shot and killed a suspected cartel smuggler on Thursday after he came across the Rio Grande in Starr County, Texas, Fox News has confirmed.

The suspected smuggler assaulted the agent, who fired his weapon in self-defense, killing the man, three border law enforcement sources told Fox News.

The agent is “okay,” according to those sources.

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The Texas Department of Public Safety confirmed the officer-involved shooting on X, adding that the suspect was pronounced dead at Starr County Memorial Hospital.

The Starr County Sheriff’s Office said Border Patrol agents were “involved in a struggle prior to the shooting,” which was confirmed at about 5:30 p.m. local time.

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The sheriff’s office asked the public to avoid the area as first responders clear and secure the scene.

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The Texas Department of Public Safety (DPS) and U.S. Customs and Border Protection did not immediately respond to inquiries from Fox News Digital.

This is a developing story. Please check back for updates.