Two more people have been arrested related to a robbery at London's Heathrow Airport in which 21 people were injured by what is thought to be pepper spray, according to police.
A man, 24, was arrested in Lambeth for suspected 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.
The arrests come after an investigation into an attack at the multi-storey car park at Terminal 3 on Sunday. Prior to the incident, two women were robbed of their suitcases upon exiting a parking garage elevator.
A three-year-old girl was among the injured during the incident. A total of five individuals went to hospital for treatment and have since been released.
Police arrested a man in his thirties for suspected theft and assault near the scene. He was subsequently released under investigation as the investigation proceeds.
Police were called at about 08:10 GMT following reports of a number of people hurt by an irritating chemical believed to be pepper spray.
The attack - which police said was a standalone incident and not considered an act of terror - caused delays to rail services and the temporary shutdown of the main airport tunnel and the Terminal 3 parking facility briefly.
