An additional two individuals are now in custody related to a theft at London's Heathrow Airport where 21 people sustained injuries by a substance believed to be an irritant spray, as stated by police.
A 24-year-old man, was taken into custody in Lambeth on suspicion of theft and assault and a 23-year-old woman was arrested on suspicion of conspiring to commit a robbery. They both remain in custody, the force said.
The arrests come after a probe into an assault at the multi-level parking garage at Heathrow's Terminal 3 this past Sunday. Before the attack, two women were robbed of their suitcases upon exiting a car park lift.
A toddler aged three was one of the those hurt in the event. Five people went to hospital for treatment and were later released.
Officers arrested a 31-year-old man for suspected robbery and assault close to the location. He has since been released pending further inquiries while inquiries continue.
Police were called at about 8:10 in the morning GMT following reports of a number of people injured by a noxious substance believed to be an irritant spray.
The assault - an event that police said was a standalone incident and not being treated as terrorism - caused delays to rail services and the partial closure of the main airport tunnel and the T3 car park for a short time.
