The most recent involved a bomb on a packed London Underground train in south-west London in September, which injured 30 people.
Police said they received numerous calls reporting that gunshots were fired on Oxford Street and at the station at 4:38pm.
The force said two men, aged 21 and 40, attended a police station voluntarily and were interviewed following an appeal. "They would now like to speak to these two people in the CCTV images, who they believe may have information about the incident and the circumstances around the incident", said the BTP.
One woman is said to have sustained injuries during the evacuation, and eight others were later taken to the hospital with minor injuries. "Officers are on scene", the transit police tweeted. A police presence remains in the area to support the public. It was an hour-and-a-half before Met Police gave the all-clear.
Scotland Yard initially treated the incident as if it was terror-related - but the incident has now been stood down after no evidence of gunfire was found.
'Officers responded in line with our procedures of a terrorist incident, this included armed officers from British Transport Police and the Metropolitan Police.
"Officers working with colleagues from British Transport Police carried out an urgent search of the area".
The station is now closed, please avoid the area at this time.
Shoppers were told to leave their shopping and flee the store.
Police created a blockade as far back as Great Marlborough Street, where Liberty is located, to stop people from approaching Oxford Circus.
Shocking footage from the scene shows as Black Friday shoppers ran screaming from the scene, hiding in nearby shops and buildings.
"I got up to the top by the ticket barriers and they were all open".
Tourist Lanna Woodward said she witnessed the aftermath of the panic on Oxford Street.
Officers investigating the incident - which saw hundreds of people break into stampedes, and frenzied reports of a gunman on the loose - now believe it began with the "altercation", which soon escalated into mass panic.
"There were people running in all directions".
Paying tribute to the "swift response" of emergency services, mayor Sadiq Khan urged Londoners to "remain vigilant and don't panic".
Anyone with any information can call BTP on 0800 40 50 40 or text 61016 citing reference 405 of 24/11.
However, Trump noted that it would be a quick round so he could get back to work on bringing more jobs back to America. After the correction was made , Trump golfed at his Trump International Golf Club in West Palm Beach.
It had submitted before the review board that release of Saeed could lead to the imposition of global sanctions on Pakistan. Last month, the board had allowed a 30-day extension to the detention of Saeed which will expire next week.
The Kremlin's principal worldwide propaganda outlet RT (formerly Russia Today ) has actively collaborated with WikiLeaks. RT routinely gives Assange sympathetic coverage and provides him a platform to denounce the United States.
The news comes after the Gators whiffed on Chip Kelly , who opted to return to the Pac-12 with the UCLA Bruins. A source close to the MSU program said "doesn't look good for the home team" on the Mullen to Florida reports.
And it's a very important magazine, and I've been lucky enough to be on the cover many times this year - and last year . "Amazing. However, the publication turned down the President's claims, saying the award victor will only be declared on December 6.
I think to get to your house at 6am is not simple and then to rest and recover, only one day to prepare is not right. I don't want to be too down on them though as they're a fantastic side to watch going forward .
Sanu completed a 51-yard pass downfield to Atlanta's Julio Jones for the score, making it 10-3 early in the second quarter. Atlanta's Matt Bryant would connect on a 36-yard field goal to put the Falcons up 20-6 at halftime.
Kim Kardashian reportedly doesn't even engage in any conversations with Jennifer when she's at the family's house anymore. It is loaded with turkey, ham, stuffing, macaroni and cheese, cranberry sauce, Brussels sprouts and candied yams.
Miss Obama started at the Harvard this Autumn, matching her parents, who both attended the Ivy League university. Videos showing the former first daughter exhibiting fairly normal teenage behavior have left people divided.
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