Police have thwarted a major terrorist attack in the heart of London's West End after a "massive" explosive device was found in a car.
Eyewitnesses said a man crashed the vehicle into bins near a nightclub and then ran off.
The foiled attack was in Piccadilly, close to the popular shopping area of Regent Street.
Suspect car covered upA member of the public alerted police to the suspicious vehicle in The Haymarket shortly before 2am this morning.
The area was cordoned off by officers who examined the car, outside an American Express foreign exchange.
They discovered what appeared to be a potentially explosive device, which was then made safe by specialist teams.
It is believed that the vehicle was a silver Mercedes which also contained two propane gas canisters and a large number of nails.
The Haymarket is in the heart of London's theatreland.
An investigation has been launched by the Metropolitan Police's Counter Terrorism Command.
Bomb scare in HaymarketOfficers are keeping an open mind about who was behind the foiled attack.
Sources say the device was "massive" and the perpetrators are unlikely to be Irish, suggesting Islamic extremists were the likely suspects.
Sky's Tim Marshall said: "No doubt this was an attempted terror attack."
He said the target was probably civilians because there are no major political institutions in the area.
Former head of the Flying Squad John O'Connor said the attacker had most probably "bottled it" and was likely to be a homegrown terrorist.
Authorities are warning of major traffic disruption in the area, with several roads shut along with Piccadilly Tube station.
Also, "enhanced security measures" have been put in place at the Houses of Westminster this morning in the wake of the incident.
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