NBC News - A U.S. Capitol Police officer and the suspect who police say drove a car into a security barricade at the U.S. Capitol complex have died, Acting Chief Yogananda Pittman said Friday.
Officer William "Billy" Evans has been identified by Capitol Police as the officer who passed away after an incident where a suspect rammed a vehicle into a barrier outside the Capitol.
NBC News' Leigh Ann Caldwell reports that officials briefed on the investigation say 25-year-old Noah Green from Indiana is the person who attacked the Capitol. Green died from his injuries after being hit by police gunfire.
The complex remained on lockdown after the incident left two officers, including the one who has died, injured. After striking the officers and ramming the check point, the driver jumped out of the car with a knife and was shot by Capitol police after failing to respond to verbal commands, Pittman said.
Pittman did not identify the slain officer because the officer's next of kin has not yet been notified.
“I just ask that the public continue to 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,” Pittman said.
The suspect was taken to a local hospital where he died. The extent of the injuries to the second officer were not clear.
Robert Contee, acting chief of the D.C. Metropolitan Police Department, said that his department would take over the investigation. Contee and Pittman both said the suspect was not someone who was previously known to their departments.
The attempted breach happened at the north barricade vehicle access point.
Congress is in spring recess for the week, so lawmakers had returned home and were not working in the building.
A heavy law-enforcement presence quickly descended upon the complex, including dozens of National Guard troops. Two stretchers were seen being taken out of an ambulance and a helicopter landed on the east front of Capitol.
A message sent to congressional offices said, "Due to an external security threat," there was " no entry or exit is permitted at this time. You may move throughout the building(s) but stay away from exterior windows and doors. If you are outside, seek cover."
Security at the Capitol has been heightened with extra security measures and personnel in place since a mob of Trump supporters stormed the complex during the Jan. 6 electoral vote count before a joint session of Congress.
This is a developing story, check back for more updates.