CHICAGO, US (AA) – The Attorney General for the District of Columbia filed a federal lawsuit Tuesday demanding restitution from far-right extremist groups including the Oath Keepers and the Proud Boys for their Jan. 6 attack on the US Capitol.

Other civil lawsuits have already been filed by members of Congress and some police officers against the rioters and also against then-President Donald Trump for his role in the riot.

But DC Attorney General Karl Racine pointed out that this is the first civil lawsuit by a state or municipal government to hold the rioters accountable “for conspiring to terrorize the District of Columbia, for unlawfully interfering with our country’s peaceful transition of power, and for assaulting our (police officers) who valiantly defended the Capitol.”

The lawsuit does not put a dollar figure on what Racine is seeking, but it would easily reach into the millions of dollars for what Racine called the “substantial and provable damage” to the city.

The lawsuit would also cover the cost of treating injured police officers and paying for their medical leave in the months after the attack. Three officers died after the attack and over a hundred were injured. Three of the rioters died as well.

It specifically targets 31 members of the Oath Keepers and the Proud Boys and claims those groups conspired to recruit members to make the trip to the Capitol for the purpose of the riot. The lawsuit also accuses members of the groups of conducting training and providing weapons and tactical gear.

The lawsuit is focused civil penalties, but the US Justice Department has already charged some of those groups’ members with a federal criminal conspiracy. Over 500 rioters have also been charged individually with crimes.

Racine blasted the rioters, calling them “vigilantes, insurrectionists who sought to crush our country’s freedoms.”