Watch as Pennsylvania marks 23rd anniversary of 9/11 attacks at Flight 93 National Memorial

Watch as a ceremony is held in Somerset County, Pennsylvania, to remember those killed when hijacked Flight 93 crashed into an open field on September 11, 2001.

US president Joe Biden and vice president Kamala Harris on Wednesday will observe the 23th anniversary of the 9/11 attacks, with visits to each of the three sites where hijacked planes crashed in 2001 and killed nearly 3,000 people.

The pair will first visit the New York City site where planes brought down the World Trade Center’s twin towers.

Vice President Harris, now the Democratic nominee for president, was due to travel to New York after debating her Republican rival, Donald Trump, in Philadelphia on Tuesday evening with just eight weeks left before the 5 November presidential election.

No remarks are scheduled at the site, where relatives will read the names of those who died.

Former President Trump said he will also attend the New York City ceremony along with his running mate JD Vance.

President Biden and Ms Harris will then fly to Shanksville, Pennsylvania, where passengers on United Flight 93 overcame the hijackers and the plane crashed in a field, preventing another target from being hit.

They will then head back to the Washington area to visit the Pentagon memorial.