Detective Chief Inspector April Casburn has been jailed for 15 months at the Old Bailey after being found guilty of misconduct in public office for offering to sell information to the News of the World
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Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
At least five people have suffered minor injuries but the cause of the blast is still unknown.
A songwriter from Harlesden who wrote a track for Beyonce's Lemonade album has been nominated for a Grammy Award.