West Virginia National Guard troops have begun to arrive in Washington, DC, to assist with President Donald Trump’s crime crackdown in the nation’s capital, a defense official told CNN on Tuesday.

Hundreds more National Guard troops are expected to arrive in Washington, D.C., in the coming days, with at least four Republican-led states offering to send soldiers.

Six states have pledged to send troops to Washington, D.C., swelling the number of National Guard brought to support federal law enforcement.