Man arrested after Heathrow Airport incident that caused evacuation

Around 20 people reported injuries.

Yesterday afternoon, the terminal was evacuated after around 20 people reported injuries following what was described as a 'potential hazardous materials incident'.

Specialist officers dispatched to the scene and conducted a thorough search of the area.

Sky News report that following the search, a canister of what is believed to be CS spray was located.

The Met Police said in a statement: "It is thought that this substance caused a reaction to those within the airport."

A 57-year-old man has been arrested on suspicion of possession of a firearm (CS spray) and of causing a public nuisance.

The incident is not being treated as terrorism.

The man remains in police custody.