I predict a riot!
http://www.bbc.co.uk/news/uk-22634468Both suspects in the killing of a serving soldier in London were known to security services, senior Whitehall sources have confirmed to the BBC.
One of the suspects is understood to be 28-year-old Muslim convert Michael Adebolajo, according to sources.
He and another man are under arrest in hospital after being shot by police after Wednesday's attack in Woolwich.
Prime Minister David Cameron has said the UK will "never give in to terror or terrorism"
Shortly after the killing a man, thought to be Mr Adebolajo, was filmed by a passer-by, saying he carried out the attack because British soldiers killed Muslims every day.
Sources said reports the men had featured in "several investigations" in recent years - but were not deemed to be planning an attack - "were not inaccurate".
They confirmed one of the suspects was intercepted by police last year while leaving the country.
Speaking outside 10 Downing Street on Thursday, Mr Cameron said: "One of the best ways of defeating terrorism is to go about our normal lives."
He said there was no justification in Islam for the attacks, which were "solely and purely" the responsibility of the individuals involved.
Across London there are 1,200 extra police officers on duty in response to the attacks, Assistant Commissioner Simon Byrne said.
Earlier officers raided a flat believed to belong to one of the attackers on a Greenwich housing estate.
Neighbours said two sisters in their 30s, an older woman and a teenage boy were taken away in a police van.
An address in Saxilby, Lincolnshire, is also being searched in connection with the attack.
According to BBC sources, Mr Adebolajo comes from a devout Christian family but took up Islam after leaving college in 2001.
He was described as "bright and witty" when he was at college.
Witnesses said the soldier was attacked at 14:20 BST with knives and a cleaver in Artillery Place, near Woolwich Barracks, by two men shouting Allahu Akbar (God is Great).
The men made no attempt to flee and encouraged people to take pictures of them and the victim.
In footage obtained by ITV News, one of the men was filmed wielding a bloodied meat cleaver and making political statements.
"You think politicians are going to die?," he said. "No, it's going to be the average guy - like you - and your children.
"So get rid of them. Tell them to bring our troops back so you can all live in peace."
Another eyewitness said the police "didn't even get a chance to get out of their car".
"They just had to shoot him because he was just hurtling towards them," Graham Wilders told the BBC. "And then the other one, with the handgun, lifted it up and obviously they shot him."
This man was photographed brandishing a knife and speaking to a woman at the scene