Donald Trump is being sued for wrongful death by the partner of a US Capitol Police officer who passed away the day after the disturbance on January 6, 2021.
According to the lawsuit, Mr. Trump “deliberately stirred up the crowd” that assaulted Brian Sicknick.
On the occasion of the second anniversary of the riots, police have increased security on Capitol grounds.
Although the FBI claims there are still many at large, hundreds have already been found guilty.
According to federal police, more than 300 of the perpetrators of the violence that day remain unidentified.
One of them is in charge of the pipe bombs that were detonated the night before the riots near the Republican and Democratic national committee offices.
The FBI announced on Wednesday that it will pay anyone with information that can help them identify the culprit $500,000 (£420,730).
Two years ago, when Congress declared President Joe Biden the winner of the 2020 election, there was a riot at the US Capitol.
The mob stormed the Capitol following a speech from Mr Trump, who was speaking at a rally one mile from the Capitol grounds. In his speech, Mr Trump claimed election fraud and called on then-Vice-President Mike Pence to overturn the results.
“We’re going to walk down to the Capitol,” Mr Trump said in the speech. “If you don’t fight like hell, you’re not going to have a country anymore.”
In the same speech he also told them to “peacefully and patriotically make their voices heard”.
During a commemoration event on Thursday at the White House, Mr Biden called the events of 6 January an “inflection point” of US history.
“It’s hard to believe that this could happen right here in America,” he said.
“January 6 is a reminder that there is nothing guaranteed about our democracy,” Mr Biden added.

‘Wrongful death’
One woman was fatally shot during the riots by a police officer. Three others who were on Capitol grounds that day died from natural causes.
One of them was Capitol Police officer Brian Sicknick, who died a day after the riots from a series of strokes.
While Mr Sicknick did not suffer any injuries during the riot, a lawsuit filed by his family on Thursday alleges the violent mob played a role in his death.
His family sued Mr Trump on Thursday for wrongful death, claiming that the former president “intentionally riled up the crowd” and that Mr Sicknick died as a result of “the injuries that violence caused”.
“Many participants in the attack have since revealed that they were acting on what they believed to be Defendant Trump’s direct orders in service of their country,” the lawsuit states.
The lawsuit also accuses Mr Trump of violating Mr Sicknick’s civil rights, assault and negligence, and is seeking $10m in damages.
Mr Trump has not yet commented on the lawsuit.
On Thursday, Mr Biden awarded several presidential citizen’s medals to officers who responded to the 6 January riots, including a posthumous medal for Mr Sicknick, saying he “lost his life after protecting the citadel of democracy.”
Since the attacks, a Democrat-led congressional probe also examined Mr Trump’s role in inciting the riots.
In December, the US House committee probing the 6 January attack asked federal prosecutors to charge Mr Trump with obstruction and insurrection – marking the first time in US history that Congress referred a former president to be criminally prosecuted.