Roads were closed around British Prime Minister Theresa May's Downing Street office on Thursday as police investigated a suspicious item.
"Temporary road closures in place around Whitehall whist suspect item assessed," British police said in a Tweet. "Specialist officers are now in attendance."
A Reuters reporter at the scene said police were calmly directing tourists onto neighboring streets.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)