The suspect exited the vehicle with a knife in hand

One of two injured U.S. Capitol Police officers has died after being hit by a suspect who then rammed their car into the north barricade of the Capitol complex Friday afternoon before exiting the vehicle with a knife, acting Chief Yogananda Pittman said at a press conference.

PHOTO: Capitol Police and responders gather near a site where a car crashed into a barrier on Capitol Hill in Washington, April 2, 2021.
Kevin Drennen/ABC News
Kevin Drennen/ABC News
Capitol Police and responders gather near a site where a car crashed into a barrier on Capitol Hil...Read More
Police opened fire and the suspect is dead, Pittman said.

"The suspect exited the vehicle with a knife in hand. Our officers then engaged that suspect. He did not respond to verbal commands," Pittman said. After the suspect lunged at officers, they "fired upon the suspect."

PHOTO: Capitol Police officer Officer William "Billy" Evans is shown in an undated handout photo from released by the Capitol Police, April 4, 2021.
U.S. Capitol Police
U.S. Capitol Police
Capitol Police officer Officer William "Billy" Evans is shown in an undated handout photo from re...Read More
The officer who died of injuries sustained at the scene has been identified as 18-year Capitol Police veteran William "Billy" Evans.

Godzilla vs Kong 2021 Pelicula Completa Gratis Latino

"He began his USCP service on March 7, 2003, and was a member of the Capitol Division’s First Responder’s Unit. Please keep Officer Evans and his family in your thoughts and prayers," Pittman said.

The suspect who was killed by Capitol Police has been identified as Noah Green, law enforcement sources told ABC News.

Authorities believe Green, 25, had ties to Virginia and Indiana, law enforcement sources said.

PHOTO: This undated selfie image from his Facebook page shows Noah Green, a suspect in the US Capitol attack that occurred on April 2, 2021. 
Facebook via Getty Images
Facebook via Getty Images
This undated selfie image from his Facebook page shows Noah Green, a suspect in the US Capito...Read More
Authorities are taking a close look at social media postings believed to be associated with Green. No clear motive has been established, sources said.

Multiple agencies are investigating the incident, including the Capitol Police, D.C. Metropolitan Police Department and the FBI Washington Field Office. The FBI Indianapolis Field Office is also providing support and assisting law enforcement partners in the investigation.

MORE: Capitol Police officials say intel on possible March 4 plot being taken 'seriously'
The other officer last was reported in "stable and non-threatening condition."

The Capitol was put on lockdown Friday afternoon. Hill staffers were sent a message from U.S. Capitol Police around 1:20 p.m. saying that "due to an external security threat ... no entry or exit is permitted." The message said people could move around inside the building "but stay away from exterior windows and doors. If you are outside, seek cover."

PHOTO: U.S. Capitol Police officers stand near a car that crashed into a barrier on Capitol Hill in Washington on April 2, 2021.
J. Scott Applewhite/AP
J. Scott Applewhite/AP
U.S. Capitol Police officers stand near a car that crashed into a barrier on Capitol Hill in Washing...Read More
"We do not have the suspect on file with U.S. Capitol Police," Acting Metro Police Department Chief Robert Contee said. "So there is no indication at this time that there is any nexus to any member of Congress."

Conte also said the incident didn't appear to be terror related.

MORE: Key takeaways from the review of Capitol Hill security after Jan. 6 attack
Congress was in recess when the incident occurred, and many staff offices were closed in observance of Good Friday.

There were approximately 2,300 National Guardsmen already on mission at the Capitol following the violent riot on Jan. 6, when protesters breached the Capitol -- five people died, including Capitol Police officer Brian Sicknick.

PHOTO: Map of the U.S. Capitol attack in Washington on April 2, 2021.
Davis/TNS
Davis/TNS
Map of the U.S. Capitol attack in Washington on April 2, 2021.
The D.C. National Guard deployed an "Immediate Reaction Force" to support Capitol Police during Friday's incident, according to a spokesperson.

About 40 National Guardsmen lined up with riot gear to block access to Constitution Avenue, just east of where the incident took place. Capitol Police and the National Guard also blocked off roads and pedestrian access near the Supreme Court.

MORE: 2 men arrested in assault on Capitol Police officer Brian Sicknick
House Speaker Nancy Pelosi ordered flags at the Capitol lowered to half-staff in honor of the officer who died, a spokesperson for Pelosi said in a tweet Friday.

President Joe Biden also issued a proclamation ordering flags to be flown at half-staff through Tuesday at the White House and on federal grounds in Washington, D.C.

In a statement, the president said he and the first lady were “heartbroken” over the deadly attack.

“We send our heartfelt condolences to Officer Evans’ family, and everyone grieving his loss. We know what a difficult time this has been for the Capitol, everyone who works there, and those who protect it,” the statement said.

PHOTO: The American flag at the U.S. Capitol flies at half-staff in honor of Capitol Police officer William Evans who was killed after a man rammed a car into two officers at a barricade outside the U.S. Capitol, April 2, 2021.
Alex Brandon/AP
Alex Brandon/AP
The American flag at the U.S. Capitol flies at half-staff in honor of Capitol Police officer William E...Read More
Pittman also asked that the public "keep U.S. Capitol police and their families in your prayers."

"This has been an extremely difficult time for U.S. Capitol police after the events of January 6 and now the events that have occurred here today. So I ask that you keep our U.S. Capitol police family in your thoughts and prayers," she said.