The US embassy in Brussels was evacuated while police investigate a suspect vehicle, officials and police said.
"I can confirm we have been evacuated. There was a suspect vehicle," said Viktor Sidabras, the spokesman for the US mission to the European Union.
Belgian news agency Belga said police closed several main routes out of the city and sealed off a security zone around the embassy
More top news
New research calls into question certain common, private treatments whose costs can run into the thousands.
1,209 people were found guilty of 'trolling' offences in 2014 - and 155 have been jailed.
Critics are ambivalent to this year's slate of winners, who were picked in part by American directors Joel and Ethan Coen.