Donald Trump sworn in as 45th US president, in historic power transfer from President Obama
In his inaugural address he vowed to fight for the "forgotten" Americans
Taking aim at Washington elites, he vowed: "Our country will prosper again"
Protesters have smashed windows and clashed with riot police on Washington's streets
Trump seems overawed by the magnitude of the occasion.
He first greets his wife as he takes the stage. He next shakes hands with Obama, who places a hand on the future president's shoulder.
Trump puts a fist in the air, and points to a few individuals seated near him, then gives a huge wave to the crowd.
All smiles, the House and Senate Republican and Democratic leaders, Mitch McConnell, Nancy Pelosi, Paul Ryan and Kevin McCarthy, enter. No sign of partisan bickering today!
Trump appears calm as he makes ready to enter the arena, waiting to be announced on the biggest day of his life.
Image source, PoolTrump and Obama arrived at the capital together
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Mike Pence, wearing a blue tie, has just come out to the platform after being introduced over the loud speaker.
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Read MoreObama shakes hands with members of the Trump family seated beside him on the dais.
He takes his seat next to his wife, Michelle, and is accompanied by Joe Biden and his wife, Jill.
Footage captured Hillary Clinton taking a deep breath before heading out in front of the cameras.
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The President and Vice-president walk to the platform side by side, chuckling.
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Police have fired gas to disperse protesters after stones were thrown and windows broken.
Inauguration: Violent protests on streets
Image source, PoolTrump's wife, Melania, is coming to the platform now accompanied by a US soldier.
She and her son, Barron, will not be immediately moving to Washington DC. They will wait until the school year ends for the 10-year-old.
Michelle Obama is stepping out to the platform along with Jill Biden.
On a separate note, Hillary Clinton was chatting with George W Bush on the platform while waiting.
Bernie Sanders is also on the platform.
While the Capitol is thronged with people, observers in Washington DC say the crowds along the parade route are sparser than those for Barack Obama in 2009 and 2013.
Trump was expected to attract about 800,000 people, compared with Obama's 1.8 million at his first inauguration.
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You can watch the arrivals and the ceremony in full live with the BBC.
Click on play button next to the headline above.
Footage appears to show Washington Post reporter Dalton Bennett being thrown to the ground and dragged across the street by riot police during protests near the Capitol.
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Former president Jimmy Carter has arrived with his wife Rosalynn.
Carter, who is the oldest former president and who recently recovered from cancer, was asked by reporters en route to DC if he had any advice for Trump. "Just do a good job, tell the truth," he said.
Carter was pictured on the plane shaking hands with other passengers.
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Trump will soon take the oath of office, becoming the 45th US president.
While the motorcade descended down Penn Ave, crowds swelled as the Beast approached the Capitol.
Around the Navy Memorial, a group of protesters holding signs booed as the motorcade passed by.
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Read MorePresident Obama and President-elect Trump have left the White House together to travel to the inauguration site at the Capitol.
The First Lady and Melania Trump are travelling ahead of them in the motorcade, which is now on Pennsylvania Avenue and just passed nearby Trump's new hotel.
Vice-President Joe Biden and Vice President-elect Mike Pence are travelling together in another car.
President Obama and President-elect Trump
Joe Biden and Mike Pence