A London police chief has pledged to ensure an increased security presence around "vulnerable" areas in the capital following a suspected arson attack at an Islamic school in Chislehurst.
Commander Simon Letchford told the BBC's Today programme:
We have put additional police resources outside a number of premises which we think are vulnerable.
Clearly this is a time for Londoners to come together after the tragic murder of Lee Rigby and we would encourage people to remain calm, to provide information to us on anybody who they believe is carrying out these criminal acts.
We will do everything we can both to protect premises but also to bring to justice those who break the law.
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