A 57-year-old man has been arrested for allegedly possessing tear gas believed to have caused a partial evacuation at Heathrow Airport.

A 'possible hazardous materials incident' saw Terminal 4 shut for around three hours shortly after 5pm on Monday, forcing crowds of people to gather outside while emergency crews…

A terminal at Heathrow Airport has been evacuated as emergency services respond to a 'possible hazardous materials incident'.

The man, aged 57, was arrested on suspicion of possession of a firearm (CS spray) and causing a public nuisance on Tuesday, 9 September.

Part of airport was evacuated and 21 people fell ill but police found no sign of any hazardous material

21 people reported injuries to the paramedics in Heathrow Airport

A 57-year-old man has been arrested for allegedly possessing tear gas believed to have caused a partial evacuation at Heathrow Airport.

Terminal 4’s check-in area evacuated for three hours on Monday while police located CS spray

A Scotland Yard spokesman said a 57-year-old man was detained on suspicion of possession of a firearm