This is the moment a tourist died in the street after being restrained by police.

Frank Ogboru, 43, was sprayed with CS gas and pinned down after a minor row. CCTV footage captured him losing consciousness after screaming: "I can't breathe. I can't breathe."

The Nigerian businessman, who was in London on holiday, stopped breathing and was declared dead in hospital.

Witnesses said officers had their "knees and feet" on him as he "wailed like a dog".

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