Joe Biden 'heartbroken' over deadly attack at US Capitol
- "We send our heartfelt condolences to Officer Evans' family, and everyone grieving his loss," the US President said in a statement.
A US Capitol police officer was killed and a second injured Friday after a vehicle rammed through security and crashed into a barrier at the Washington complex, forcing it into lockdown less than three months after a mob assault on Congress.
Capitol Police shot dead the driver after he jumped out of the car and lunged at them with a knife, Acting Chief Yogananda Pittman told reporters.
President Joe Biden, who was with First Lady Jill Biden at Camp David for the Easter holiday, offered his "heartfelt condolences" to the family of William Evans, the veteran policeman killed in the attack.
"Jill and I were heartbroken to learn of the violent attack at a security checkpoint on the US Capitol grounds," Biden said in a statement.
US media said officials had identified the attacker as Noah Green, a 25-year-old Black man from Indiana and an adherent of the black nationalist Nation of Islam movement.
Pittman said there was no immediate indication of his motivation or police file on him.
"It does not appear to be terrorism-related, but obviously we will continue to investigate," Washington Metropolitan Police Chief Robert Contee added.
Some of Green's online postings in March suggested a level of despair and paranoia. He said he was unemployed and had health problems, and made references to biblical concepts of the end of times.
He wrote that he had faced "unimaginable tests" and was now "in search of a spiritual journey."
In one post he spoke of being tormented by the FBI and CIA, hospitalized and subjected to "mind control," and called the government "the #1 enemy of Black people!"
He was also said he was a follower of Louis Farrakhan, the leader of the Nation of Islam, who promotes Black nationalist, anti-white and anti-Semitic thinking.