2 May 2011
Last updated at 17:40
Crowds started gathering at Ground Zero in New York City - site of the World Trade Center destroyed in the 9/11 attacks - as news broke that Osama Bin Laden had been killed in Pakistan.
Some New Yorkers celebrated long into the night.
There was jubilation, too, outside the White House. After US TV networks broke the news, crowds gathered even before President Obama officially announced the news that Osama Bin Laden had been killed.
In Palm Beach, Florida, Kathy Maycen reached out to touch the name of her daughter, Lindsay Stapleton Morehouse, on a memorial to victims of the 9/11 attacks.
The FBI has updated its website to say that Osama Bin Laden has been killed. His deputy, Ayman al-Zawahiri, remains at large.
The news was flashed around the world on satellite channels, as in this railway station in Seoul, South Korea.
There was wall-to-wall coverage at this shop in Mumbai, India.
US military personnel in Afghanistan watched the president's announcement at Kandahar airfield.
People in Karachi, in southern Pakistan, read a newspaper account of the operation in the north of their country to kill the al-Qaeda leader.
In neighbouring Afghanistan, President Hamid Karzai said Bin Laden's death proved that "the war against terrorism is... not in Afghanistan".
The US dollar rebounded and stock markets rose in Asia and Europe on the news. Japan's Nikkei 225 index closed above 10,000 points for the first time since Japan's earthquake and tsunami disaster.
The US has stepped up security at its embassies and consulates around the world, anticipating al-Qaeda reprisal attacks.
Indian sand artist Sudarshan Pattnaik created a sand sculpture to mark the death of Bin Laden at the golden sea beach at Puri, Orissa, India.