An "improvised explosive device" was detonated on a Tube train in south‑west London during the rush hour this morning.
The blast, at Parsons Green station on a District Line train from Wimbledon, is being treated as terrorism.
Twenty‑nine people have been treated in hospitals, mostly for burns, though at least eight have now been discharged.
So‑called Islamic State says it carried out the attack.
A hunt is under way for the person who placed the device.
The area around the station has been evacuated, with specialist officers there securing the remains of the improvised device and ensuring it is stable.
UK Prime Minister Theresa May condemned the "cowardly" attack, which she said had "intended to cause significant harm".
The UK terror threat has been increased to its highest level as police continue the hunt for the person behind the Tube bombing in south west London.
Theresa May said the threat was now critical, meaning an attack is expected imminently, after a device was detonated at Parsons Green station.
UK Police said some 1,000 armed officers would be seen across the country after military assistance was requested.
May said the military would be providing support to police and would replace officers on guard duty at national infrastructure sites that are not accessible to the public.
Source: BBC
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