An additional two individuals are now in custody related to a robbery at Heathrow Airport in which 21 people sustained injuries by what is thought to be pepper spray, according to police.
A 24-year-old man, was taken into custody in Lambeth on suspicion of theft and assault and a woman, 23 was arrested for suspected conspiracy to commit robbery. They both remain in custody, authorities confirmed.
The arrests follow a probe into an assault at the multi-storey car park at Terminal 3 on Sunday. Before the incident, a pair of female travelers were robbed of their suitcases upon exiting a parking garage elevator.
A toddler aged three was among the those hurt in the event. A total of five individuals were taken to the hospital for treatment and were later discharged.
Officers arrested a man in his thirties for suspected robbery and assault near the location. He was subsequently released pending further inquiries while inquiries continue.
Police were alerted at about 08:10 GMT following reports of several people injured by a noxious substance believed to be an irritant spray.
The assault - which authorities stated was a standalone incident and not being treated as an act of terror - resulted in train delays and the partial closure of the Central Terminal Area tunnel and the T3 car park briefly.
