An additional two individuals have been arrested in connection with a theft at London's Heathrow Airport where over twenty individuals sustained injuries by a substance believed to be an irritant spray, according to law enforcement.
A man, 24, was taken into custody in the Lambeth area for suspected robbery and assault and a 23-year-old woman was detained for suspected conspiring to commit a robbery. Both individuals are still being held, the force said.
These detentions follow a probe into an attack at the multi-storey car park at Heathrow's Terminal 3 on Sunday. Before 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 during the incident. A total of five individuals went to hospital for treatment and were later released.
Officers detained a man in his thirties for suspected theft and assault close to the location. He has since been released under investigation while inquiries continue.
Police were called at about 8:10 in the morning GMT following reports of a number of people injured by an irritating chemical believed to be an irritant spray.
The assault - which authorities stated was isolated and not considered an act of terror - resulted in train delays and the temporary shutdown of the main airport tunnel and the T3 parking facility briefly.