An additional two individuals have been arrested in connection with a theft at London's Heathrow Airport in which over twenty individuals were injured by a substance believed to be an irritant spray, according to law enforcement.
A man, 24, was arrested in the Lambeth area for suspected theft 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.
The arrests come after a probe into an assault at the multi-level parking garage at Terminal 3 this past Sunday. Prior to the incident, a pair of female travelers were robbed of their suitcases after getting out of a parking garage elevator.
A three-year-old girl was among the injured in the event. Five people went to hospital for medical care and were later discharged.
Officers arrested a 31-year-old man on suspicion of theft and assault near the scene. He has since been released under investigation while inquiries continue.
Authorities were alerted at approximately 08:10 GMT following reports of several individuals hurt by an irritating chemical believed to be an irritant spray.
The assault - which authorities stated was isolated and not being treated as terrorism - resulted in delays to rail services and the temporary shutdown of the Central Terminal Area tunnel and the Terminal 3 car park for a short time.