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Maryland Gov. Larry Hogan (R) said Thursday that after receiving a request for help from the District of Columbia on Wednesday, he immediately mobilized the state police and National Guard, but was repeatedly denied authorization to deploy.

Hogan explained that while on a video conference call with Japan's ambassador, his chief of staff interrupted to tell him "the U.S. Capitol was under attack." He organized an emergency meeting to mobilize the police and Maryland National Guard, he said, and during the meeting, Rep. Steny Hoyer (D-Md.), the No. 2 House Democrat, called from "an undisclosed bunker" to tell Hogan that Capitol Police were "overwhelmed" by the pro-Trump mob storming the Capitol.

Hoyer was "pleading with us" to send the National Guard, Hogan said, and he had to tell him authorization had not yet come through. About 90 minutes later, Secretary of the Army Ryan McCarthy called Hogan to ask, "Can you come as soon as possible?" The governor responded, "Yeah, we've been waiting. We're ready."

"I can't tell you what was going on on the other end, on the decision-making process," Hogan said. "There's been lots of speculation in the media about that, but I'm not privy to what was going on inside the White House or inside the Pentagon." There are 500 Maryland National Guard members on standby outside of D.C., Hogan said, and he wants to "assure all Americans that the state of Maryland will do anything and everything we possibly can to continue to secure the core of our nation's capital and to ensure the peaceful transition of power."