Overview
- British Transport Police received a report at 12:45pm of a man on a Brighton train believed to have a firearm.
- Sussex Police met the train on arrival at 1:25pm at Gatwick and arrested a man carrying two imitation firearms.
- The station was evacuated and cordoned as emergency services, including BTP and Sussex Police, responded to the incident.
- Gatwick Express, Thameslink and Southern said all lines have reopened, with operators warning of residual delays and advising extra time for journeys.
- Airport terminal operations were reported to be largely unaffected while rail services recovered.