Ronke Phillips has the latest from south Bermondsey, after a 13-year-old girl was killed in a crash during a police chase.
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The force has been tweeting after carrying out a series of dawn raids.
Adenike Akingbogun made the dangerous manoeuvre after ignoring the crossing lights and driving onto the tracks.
Police arrived at the 73-year-old's home after Alfie chased a delivery man.