Two Americans have been killed in Tuesday's suicide bombings in Brussels, a senior US official says, as US Secretary of State John Kerry met with Belgian leaders and offered condolences and help following the attack.
The official did not offer specifics on where the Americans died, saying only that two had been confirmed killed.
Kerry, travelling back to Washington after talks in Moscow, stopped in Belgium on Friday to demonstrate solidarity after the attacks, which killed 31 people and injured hundreds of others.
"The United States is praying and grieving with you for the loved ones of those cruelly taken from us, including Americans, and for the many who were injured in these despicable attacks," Kerry said after meeting Belgian Prime Minister Charles Michel.
"The United States stands firmly with Belgium and with the nations of Europe in the face of this tragedy," he said.
"We will continue to provide any assistance necessary in investigating these heinous acts of terrorism and bringing those responsible to justice," Kerry added.
Michel offered his condolences for the death of the Americans, but did not elaborate. "We want to co-operate with you, do our best with you in order to face these very sensitive issues," he said.
Meanwhile the Dutch Foreign Ministry has also confirmed three of its citizens lost their lives in the attacks.
The victims included a 41-year-old woman from Deventer, on the border with Germany, and a brother and sister from Maastricht who lived in New York.
And a Chinese national was also among those killed in the bombings, according to China's official Xinhua news agency.
A UK man, missing since the attacks, was also confirmed dead.
The family of Briton David Dixon, 53, who is originally from Hartlepool but was living in the Belgian capital, said they had received "the most terrible and devastating news".
A statement from the Foreign Office said: "We can confirm David Dixon lost his life in the attacks which took place in Brussels on Tuesday 22 March 2016. Our thoughts are with his family at this difficult time and our Embassy staff are continuing to support them.
"We know of seven British nationals who were injured in the attacks - three are still being treated in hospital."
