A black teenager has been shot dead by police in Missouri - near where the killing of Michael Brown in August sparked worldwide protests.
St Louis County Police say the teenager pointed a gun at an officer at a petrol station in the suburb of Berkeley.
Crowds gathered and there were scuffles with police at the scene.
4 arrests were made.
Local media say the teenager who was shot is 18 year-old Antonio Martin.
But St Louis County Police chief Jon Belmar says the officer who fired at him had little choice.
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