An additional two individuals are now in custody related to a theft at London's Heathrow Airport where 21 people were injured by a substance believed to be pepper spray, as stated by police.
A 24-year-old man, was arrested in Lambeth on suspicion of theft and assault and a 23-year-old woman was detained on suspicion of conspiring to commit a robbery. They both remain in custody, the force said.
These detentions come after an investigation into an assault at the multi-level parking garage at Terminal 3 this past Sunday. Prior to the incident, two women were robbed of their luggage upon exiting a car park lift.
A toddler aged three was one of the injured in the event. Five people were taken to the hospital for medical care and were later released.
Police arrested a 31-year-old man for suspected theft and assault near the scene. He was subsequently released pending further inquiries as the investigation proceeds.
Authorities were alerted at about 08:10 GMT following reports of a number of individuals injured by an irritating chemical believed to be an irritant spray.
The attack - an event that police said was a standalone incident and not considered terrorism - caused train delays and the partial closure of the main airport tunnel and the T3 parking facility for a short time.
