Overview
- Metropolitan Police say a group of men sprayed a substance believed to be pepper spray during a robbery of a woman's suitcase, captured in CCTV reviews.
- A 31-year-old man was arrested within minutes on suspicion of assault and remains in custody as officers work to identify and locate other suspects.
- London Ambulance Service treated 21 people, including a three-year-old girl, with five taken to hospital and all injuries assessed as not life-changing or life-threatening.
- The incident is not being treated as terrorism, and police have maintained an enhanced presence at Heathrow while enquiries continue.
- Travel was severely disrupted, with road closures and pauses to Heathrow Express and Elizabeth Line services, which later began to recover; witnesses are urged to contact 101 quoting CAD 1803 7 DEC.