An additional two individuals are now in custody related to a theft at London's Heathrow Airport where over twenty individuals sustained injuries by a substance believed to be an irritant spray, according to police.
A 24-year-old man, was arrested in Lambeth for suspected robbery and assault and a 23-year-old woman was arrested for suspected conspiring to commit a robbery. They both are still being held, the force said.
These detentions follow a probe into an assault at the multi-level parking garage at Heathrow's Terminal 3 on Sunday. Prior to the attack, two women were robbed of their luggage after getting out of a car park lift.
A three-year-old girl was one of the those hurt during the incident. Five people went to hospital for medical care and were later released.
Officers detained a 31-year-old man on suspicion of theft and assault close to the scene. He has since been released under investigation while inquiries continue.
Police were alerted at approximately 08:10 GMT after reports came in regarding several people injured by a noxious substance believed to be pepper spray.
The attack - an event that police said was isolated and not considered terrorism - resulted in train delays and the temporary shutdown of the main airport tunnel and the T3 car park briefly.
