Overview
- Officers were called at 8:11am to Terminal 3’s multi‑storey car park, where a group of men allegedly sprayed people with a substance believed to be pepper spray.
- London Ambulance Service treated 21 people and took five to hospital, with injuries described as not life‑threatening or life‑changing.
- Armed response officers arrested one man on suspicion of assault, who remains in custody as enquiries continue to trace additional suspects.
- The incident is not being treated as terrorism, and police maintained an increased presence at the airport following the response by firefighters and paramedics.
- Road and rail access was temporarily halted then reopened, with residual delays and some cancellations expected as services return to normal; witnesses are asked to call 101 quoting CAD 1803 7 DEC.