WASHINGTON (AP) — Secret Service agents rushed President Donald Trump to a White House bunker on Friday night as hundreds of protesters gathered outside the executive mansion, some of them throwing rocks and tugging at police barricades.

Trump spent nearly an hour in the bunker, which was designed for use in emergencies like terrorist attacks, according to a Republican close to the White House who was not authorized to publicly discuss private matters and spoke on the condition of anonymity.

Instead, a White House official who was not authorized to discuss the plans ahead of time said Trump was expected in the coming days to draw distinctions between the legitimate anger of peaceful protesters and the unacceptable actions of violent agitators.

In recent days security at the White House has been reinforced by the National Guard and additional personnel from the Secret Service and the U.S. Park Police.

On Sunday, the Justice Department deployed members of the U.S. Marshals Service and agents from the Drug Enforcement Administration to supplement National Guard troops outside the White House, according to a senior Justice Department official.