The Washington, DC, attorney general filed a lawsuit Thursday seeking to stop President Donald Trump's deployment of National Guard troops during the administration's police intervention at the site.

The lawsuit, filed in federal court by District of Columbia Attorney General Brian Schwalb, seeks an injunction blocking the troop deployment, calling it unconstitutional and violating multiple federal laws.

In a statement, Schwalb said the deployment of the National Guard for law enforcement purposes was “unnecessary and unwanted” and “dangerous and harmful” to the city’s residents.

“No American city should have the U.S. military—let alone out-of-state military personnel, who are neither accountable to residents nor trained in local law enforcement—policing its streets,” Schwalb said. “Today it’s Washington, D.C., but tomorrow it could be any other city. We filed this lawsuit to end this unlawful federal overreach.” The lawsuit claims the administration’s “unprecedented and unlawful actions” have caused “irreparable harm” by violating the city’s right to self-governance, fueling distrust of local law enforcement, and harming commerce and tourism. Nearly 2,300 troops from seven states have been deployed to the city’s streets since August 11, a move Schwalb says exceeds the president’s authority and violates the city’s home rule, enshrined in the Home Rule Act. Schwalb’s lawsuit argues that the forces were placed under the command of the Pentagon and subsequently designated by the U.S. Marshals Service for security duties, “in violation of the fundamental prohibition on military involvement established in local law.”

It also alleges that the government is illegally exercising control over state militias, without formally inducting them into federal service,arguing that this constitutes a violation of the Constitution and federal law.

The lawsuit follows a California federal judge's ruling this week that the Trump administration violated the Posse Comitatus Act, which prohibits the use of troops in civilian law enforcement activities.

The lawsuit was filed by Washington's Attorney General-elect, Democrat Brian Schwalb, whose office represents Washington in court and prosecutes some misdemeanors as well as crimes committed by minors.

The U.S. Attorney's Office for the District of Columbia, led by Jeanine Pirro, prosecutes most crimes in the District.

Trump has talked about sending troops to cities including Chicago, New Orleans, and Baltimore.

The military presence in Washington has been accompanied by a large presence of federal agents, who often play a supporting role and lag behind other law enforcement agencies with jurisdiction in the city.