ABRAM -- A man who shot at a U.S. Border Patrol agent this weekend remains at large, federal authorities said Sunday.

No injuries were reported in the Saturday attack, the details of which are still under investigation, local FBI spokesman Jorge Cisneros said.

The incident occurred in the small border community of Abram, near Penitas, where an agent attempted to pull over a suspected smuggler around 10 a.m.

The man attacked the agent, who fired at least two shots in self-defense. At some point during the stop, the alleged smuggler fired back but missed the agent.

How many shots were fired during the volley remains unclear.

While the shooter continues to elude authorities, several others were detained, Cisneros said.

Border Patrol officials referred all questions about the incident to the FBI, which is handling the investigation of the case.

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