'Never, ever forget' - America marks 25th anniversary of 9/11 attacks
In New York, the Pentagon and Pennsylvania, solemn ceremonies commemorate the landmark anniversary.
Twenty-five years after 9/11, US presidents past and present have commemorated the lives lost when hijacked planes slammed into the World Trade Center, the Pentagon and a Pennsylvania field.
President Donald Trump led a Pentagon ceremony, while US Vice-President JD Vance attended a memorial at the site of the World Trade Center in New York, along with all four living former US presidents and first ladies.
Moments of silence were held to mark the timings of the attacks and the names of nearly 3,000 people who died were read out.
Illnesses related to dust and smoke from the towers' collapse have since claimed more than threefold the nearly 3,000 lives lost in the attacks, US health officials say.