Capitol lockdown CNN

The US Capitol is on lockdown due to an external security threat on April 2.

WASHINGTON (AP) — A Capitol Police officer has been killed after a man rammed a car into two officers at a barricade outside the U.S. Capitol and then emerged wielding a knife.

Thee suspect died at a hospital. Capitol Police Acting Chief Yogananda Pittman did not identify the slain officer or suspect.

Authorities said there was no longer an ongoing threat and that the attack did not appear to be related to terrorism.

The crash and shooting happened at a security checkpoint near the Capitol as Congress is on recess. It comes as the Washington region remains on edge nearly three months after a mob of armed insurrectionists stormed the Capitol as Congress was voting to certify Joe Biden’s presidential win.

MORE DETAILS: U.S. Capitol Police officer dies after attacker rammed car into checkpoint; suspect also dead