Man arrested after ‘CS gas’ incident sparked Heathrow evacuation London Evening StandardMan arrested after CS gas found in Heathrow evacuation BBCMan arrested after Heathrow Airport incident that sparked evacuation of terminal Sky News‘Mass psychogenic illness’ plausible cause of toxic substance alert at Heathrow, says scientist The GuardianHeathrow incident a ‘mass hysteria’ event, Met source says as no hazardous material found BBC
