Possible suicide bomber shot dead on London Underground

This is London has witnesses that seem to think this may have been a police "execution", although I don't think that, if he had a bomb on him, that may have been completely unjustified.

A SUSPECTED suicide bomber was shot dead on the London Underground today. Marksmen opened fire as terrified passengers were evacuated from the platform at Stockwell Tube station just after 10am.
[...]
Unconfirmed reports suggested the dead man was involved in yesterday's attacks in London.

If the suspect is confirmed to be a suicide bomber, it would mark the fifth attempted terrorist attack on Lo ndon in less than a day.
[...]
The man tripped and was also pushed to the floor and one of the officers shot him five times, said Mr Whitby, who had been sitting on the Tube train reading his paper, as it was stationary with its doors open.

From The Scotsman

Previously diaried here, but that was some time ago, and people will be waking up and getting online about now. The BBC has a timeline here that is getting rapidly updated. It seems that there is another one, possibly two, areas that have been cordoned off by police, and that dogs are present.