Nine people were convicted by a federal jury on Friday for their roles in last year’s attack on an ICE detention facility in Texas. Federal prosecutors described this case as the first-ever terrorism trial involving adherents of “antifa.”

One man, Benjamin Song, was identified by authorities as the ringleader of an antifa cell in northern Texas. He was convicted of attempted murder after a police officer was injured during the attack. The other eight individuals were convicted for their support of the attack, facing charges that included rioting and possession of explosives.

The Justice Department hailed the verdicts as a significant victory against antifa. “Antifa is a domestic terrorist organization that has been allowed to flourish in Democrat-led cities — not under President Trump,” said Attorney General Pam Bondi, according to the Washington Times. “Today’s verdict on terrorism charges will not be the last as the Trump administration systematically dismantles antifa and finally halts their violence on America’s streets.”

President Donald Trump designated Antifa a domestic terrorist organization last fall, citing what his administration described as anti-government views shared among its supporters. Some experts have challenged that designation, arguing that Antifa is better understood as a loose movement or ideology rather than a formal organization.

The July 4 attack targeted the U.S. Immigration and Customs Enforcement Prairieland Detention Center, a facility where migrants are held while awaiting deportation proceedings.

The group first launched fireworks at the facility as a distraction. When local police responded to the scene, gunfire erupted.

According to testimony from Lt. Thomas Gross of the Alvarado Police Department, he was struck in the neck after shots were fired. Gross told the court that he heard Benjamin Song shout, “get to the rifles,” moments before the gunfire began.

Several individuals involved later said they believed they were attending what had been described as a “noise demonstration,” intended to show support for detained migrants and protest the actions of U.S. Immigration and Customs Enforcement.

Federal prosecutors, however, said the events that unfolded that night went far beyond a demonstration, describing the incident as a coordinated and violent attack on law enforcement.

“Their terrorist acts, attempted murder, vandalism, and explosives launched at a detention facility were a far cry from some peaceful protest or First Amendment expression,” said Ryan Raybould, the U.S. attorney in northern Texas, per the Times.