An additional two individuals have been arrested in connection with a theft at London's Heathrow Airport in which 21 people were injured 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 woman, 23 was arrested on suspicion of conspiracy to commit robbery. Both individuals remain in custody, the force said.
The arrests follow a probe into an attack at the multi-storey car park at Terminal 3 this past Sunday. Before the incident, two women were robbed of their suitcases after getting out of a car park lift.
A toddler aged three was one of the those hurt in the event. A total of five individuals were taken to the hospital for treatment and were later released.
Police arrested a man in his thirties on suspicion of theft and assault close to the scene. He has since been released under investigation while inquiries continue.
Police were alerted at about 8:10 in the morning GMT following reports of several people hurt by an irritating chemical thought to be pepper spray.
The attack - which police said was isolated and not being treated as terrorism - resulted in delays to rail services and the partial closure of the Central Terminal Area tunnel and the T3 car park briefly.
