Two women have been stabbed in an East London park in separate attacks, less than 3 weeks apart.
Police are warning the public to be vigilant after the women were assaulted in Wapping Woods.
As Nick Thatcher reports, detectives are linking the incidents.
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The former mayor of Tower Hamlets, was forced to step down after he was found guilty of a string of corrupt and illegal practices.
The service is the first to be held in the singer's honour since the private funeral held by the family at Highgate Cemetery on March 29.
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