LONDON — A 57-year-old man was arrested Tuesday for allegedly possessing tear gas that is believed to have caused the partial evacuation of a terminal at Heathrow Airport.

About 20 people treated by paramedics were not seriously injured in the incident that closed the departures area of Terminal 4 for about three hours late Monday, the Metropolitan police said.

It was not believed to be terror-related, police said, but the investigation is ongoing.

Police, firefighters and ambulance crews responded to a potential hazardous material incident. Officers found a canister that was believed to contain CS gas, a synthetic irritant used by police as tear gas

The man was held in custody after being arrested on suspicion of possessing CS spray, which is considered a firearm in Britain. He also was arrested on suspicion of causing a public nuisance.

Suspects in England are not named unless they are charged with a crime.

Newsday's Gregg Sarra talks to Carey football player James McGrath about how he has persevered after losing his parents at a young age, and to the Lahainaluna (Hawaii) High School football coach about how his team persevered after the Maui wildfires of 2023, plus a behind-the-scenes look at the All-Long Island teams photo shoot. Credit: Newsday/John Paraskevas

Sarra Sounds Off, Ep.16: From Island to island, how football helped overcome tragedy Newsday's Gregg Sarra talks to Carey football player James McGrath about how he has persevered after losing his parents at a young age, and to the Lahainaluna (Hawaii) High School football coach about how his team persevered after the Maui wildfires of 2023, plus a behind-the-scenes look at the All-Long Island teams photo shoot.

Newsday's Gregg Sarra talks to Carey football player James McGrath about how he has persevered after losing his parents at a young age, and to the Lahainaluna (Hawaii) High School football coach about how his team persevered after the Maui wildfires of 2023, plus a behind-the-scenes look at the All-Long Island teams photo shoot. Credit: Newsday/John Paraskevas

Sarra Sounds Off, Ep.16: From Island to island, how football helped overcome tragedy Newsday's Gregg Sarra talks to Carey football player James McGrath about how he has persevered after losing his parents at a young age, and to the Lahainaluna (Hawaii) High School football coach about how his team persevered after the Maui wildfires of 2023, plus a behind-the-scenes look at the All-Long Island teams photo shoot.

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME