Two more people are now in custody in connection with a theft at London's Heathrow Airport in which 21 people were injured by what is thought to be pepper spray, as stated by police.
A 24-year-old man, was arrested in the Lambeth area on suspicion of robbery and assault and a 23-year-old woman was arrested for suspected conspiring to commit a robbery. They both are still being held, authorities confirmed.
These detentions come after a probe into an attack at the multi-level parking garage at Terminal 3 this past Sunday. Before the incident, two women were robbed of their suitcases upon exiting a car park lift.
A toddler aged three was one of the injured during the incident. A total of five individuals were taken to the hospital for treatment and have since been released.
Officers arrested a man in his thirties for suspected robbery and assault close to the location. He was subsequently released under investigation while inquiries continue.
Authorities were called at about 8:10 in the morning GMT following reports of several people hurt by an irritating chemical thought to be an irritant spray.
The attack - which police said was isolated and not being treated as terrorism - caused train delays and the partial closure of the Central Terminal Area tunnel and the T3 parking facility briefly.