The man who rammed a car into a security checkpoint at the U.S. Capitol was killed by police, one officer died and another was injured.
Reports said a car rammed into a gate at the U.S. Capitol at the North Barricade along Constitution Avenue.
The U.S. Capitol was earlier put on lockdown following the external security threat.
Individuals at the U.S. Capitol received an alert that warned them to "stay away from exterior windows and doors" and that "no entry or exit" was permitted as officials addressed the threat.
NBC News reported the car initially passed a checkpoint, struck two police officers and then the driver came out with a knife and was shot. One officer reportedly remained in critical condition.
Acting Chief Yogananda Pittman said “it is with very heavy heart one of the officers has succumbed to his injuries.”
The officer was identified as William F. Evans, an 18-year veteran of the force.
The other officer was in “stable and nonthreatening condition,” the Capitol Police said Friday.
Robert Contee, chief of Washington metro police, said the incident didn't “appear to be terrorism related.”
He said an investigation was continuing.
The suspect was identified by police as Noah Green, 25 years old, of Indiana.
Three months after domestic terrorists stormed the U.S. Capitol building on Jan. 6, Capitol Police have been on high alert. One month after the attack, the police reported more than 140 officers had been injured during the surge. Officer Brian D. Sicknick died one day after clashing with the mob of supporters for former President Donald Trump.
In an episode of "60 Minutes," CBS News interviewed Michael Sherwin, the leader of the investigation into the attacks, reported more than "400 defendants" were being charged with crimes linked to the Jan. 6 incident.
President Trump was impeached for a second time by the U.S. House of Representatives over charges of inciting the crowd to storm the Capitol Building at a rally the morning of the attacks on Jan. 6. The impeachment in the Senate failed.
This is a developing story. Stay tuned for further details.