Trafalgar Square in London was evacuated this morning as police warning people not to travel to the area.
The busy city centre area is just a 15-minute walk away from Buckingham Palace where celebrations are set to take place this evening for the Queen's Platinum Jubilee. City of Westminster Police confirmed the evacuation of the area on Twitter.
The post said: "Officers are currently at #TrafalgarSquare where they have evacuated the scene. Please do not travel to the area"
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The Mirror reported that a suspicious package was found and a "loud bang" was heard, although this is yet to be verified officially.
Tourist Sarah Churchill who was in Trafalgar Square at the time, with her 11-year-old son Noah, told the Mirror : "There were lots of police, we were just about to walk through the square when we got to corner we saw it was cordoned off.
She added: "We could see lots of police and what looked like a bomb squad van, we were just going to walk down to the Mall to see how it was all set up for tonight, when we found the area cordoned off."
At 11.16am Westminster tweeted: "Police remain on scene. The incident has now been concluded and the square will reopen in due course."