Two more people have been arrested related to a robbery at London's Heathrow Airport in which 21 people were injured by a substance believed to be an irritant spray, according to police.
A man, 24, was arrested in Lambeth for suspected robbery and assault and a woman, 23 was arrested on suspicion of conspiracy to commit robbery. They both are still being held, the force said.
The arrests follow a probe into an assault at the multi-level parking garage at Heathrow's Terminal 3 on Sunday. Before the attack, a pair of female travelers had stolen from them their luggage upon exiting a parking garage elevator.
A toddler aged three was among the injured in the event. A total of five individuals went to hospital for treatment and have since been discharged.
Police detained a 31-year-old man for suspected theft and assault close to the scene. He has since been released under investigation as the investigation proceeds.
Authorities were alerted at about 08:10 GMT after reports came in regarding several people hurt by a noxious substance thought to be an irritant spray.
The attack - an event that police said was a standalone incident and not considered an act of terror - caused train delays and the temporary shutdown of the Central Terminal Area tunnel and the T3 car park for a short time.
