A three-year-old girl is among those who were treated by ambulance crews after a group of men used pepper spray on a woman they had robbed of her suitcase at Heathrow Airport .

Officers were called at 8.11am on Sunday to reports that multiple people had been assaulted by a group of men at the multi-storey car park at Terminal 3.

Armed officers called to the scene found a number who had been sprayed with what the Metropolitan Police said is believed to be a type of pepper spray.

One of the 21 patients the London Ambulance service treated was a girl aged three, detectives said, and five were taken to hospital.

Their injuries are not believed to be life-changing or life-threatening.

A 31-year-old man who was arrested on suspicion of assault remained in custody on Sunday afternoon, po

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