The FBI is investigating the violent anti-fascist group “Antifa” for alleged plans to stage an ‘armed rebellion’ at the U.S. Mexico border, according to a report from The Daily Caller.

An FBI document dated December 2018 obtained by The San Diego Union-Tribune lays out Antifa’s plans to purchase guns from a “Mexico-based cartel associate known as Cobra Commander.” Cobra Commander was identified as Ivan Reibeling. Reibeling and Evan Duke, individuals both named in the FBI report, deny the accusations.

“It doesn’t make any sense that someone from the United States would purchase guns in Mexico. And the Hondurans certainly didn’t bring money to buy guns. It doesn’t make any sense; in fact it’s extremely absurd to say the Hondurans wanted to attack the United States at the border,” Reibeling told the paper.

According to the paper, the FBI is working with both U.S. and Mexican law enforcement to conduct a thorough investigation. Moreover, the report has been distributed as a “priority” document to the Department of Homeland Security, U.S. Customs and Border Protection, the Drug Enforcement Agency, Immigration and Customs Enforcement, the Central Intelligence Agency and the National Security Administration, and other relevant agencies.

The FBI document was provided to the paper. It hasn’t been made publicly available because it’s been labeled “Law enforcement sensitive”.