Two Arrests in the Aftermath of London Heathrow Irritant Spray Attack

Two more people have been arrested in connection with a robbery at Heathrow Airport in which 21 people sustained injuries by what is thought to be an irritant spray, according to law enforcement.

A 24-year-old man, was taken into custody in Lambeth for suspected robbery and assault and a woman, 23 was detained for suspected conspiracy to commit robbery. Both individuals are still being held, authorities confirmed.

The arrests follow a probe into an attack at the multi-level parking garage at Heathrow's Terminal 3 this past Sunday. Prior to the incident, a pair of female travelers had stolen from them their suitcases upon exiting a parking garage elevator.

A three-year-old girl was one of the injured in the event. A total of five individuals went to hospital for medical care and were later released.

Police arrested a man in his thirties on suspicion of theft and assault near the location. He was subsequently released under investigation as the investigation proceeds.

Authorities were called at approximately 08:10 GMT following reports of several people hurt by a noxious substance believed to be pepper spray.

The assault - an event that authorities stated was isolated and not considered terrorism - caused delays to rail services and the partial closure of the main airport tunnel and the T3 car park for a short time.