Suspicious letters containing a white powder and racist abuse were sent to several Islamic centres in London on Thursday, Middle East Eye can reveal.
Police are investigating the letters, which also featured drawings of a mosque that was crossed out.
The letters were received the same day that the UK parliament was shut down and MPs were evacuated after a similar package, also containing white powder and the same message, was sent to Labour Party peer for Rotherham Lord Ahmed.
Bomb squads were deployed and the centres briefly closed on Thursday evening after the discoveries were reported. The white powder turned out to be chalk, but a police officer at the scene of the Masjid Ayesha mosque in Tottenham, one of the centres, said the incident was being taken seriously because it could be a dry run for a larger attack.