Two more people have been arrested following a "pepper spray" incident at London's Heathrow Airport

The incident took place shortly after 8am on Sunday, when a woman was allegedly robbed of her suitcase in a car park lift within the airport's Terminal 3 building.

A 31-year-old man was arrested on suspicion of robbery and assault close to the scene on Sunday. He was released under investigation while enquiries continue.

Now, a 24-year-old man in Lambeth has been arrested on suspicion of robbery and assault and a 23-year-old woman on suspicion of conspiracy to commit robbery, the Metropolitan Police said.

The pair remain in custody.

London Ambulance Service attended the scene and treated 21 people, including a three-year-old girl.

Five people were taken to hospital. Their injuries are

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