A security alert was sounded in the United States embassy in London where officials found and removed a "suspicious package" outside its premises.
Armed police and patrol dogs surrounded the building while fire engines were also deployed.
The staff inside the building was told to stay "far away from the windows".
"The US Embassy is back to normal business operations. Local authorities investigated and cleared a suspicious package outside the Embassy.
"Thanks to @metpoliceukfor your swift action, and thanks to all visitors for your cooperation and patience at this time," the US Embassy tweeted.