Investigators allege he planned the attack for a year and was driven by a desire "to kill all Zionist people."
A person claiming to have a Molotov cocktail and a knife was stopped on the East Plaza outside the U.S. Capitol building on Monday, according to the Capitol police.
Two men, including an active-duty U.S. Marine, were arrested on suspicion of throwing a Molotov cocktail at a Planned Parenthood in California.
Photos showed the building with extensive damage, forcing officials to close the front lobby indefinitely.
