Bomb hoaxes: Messages reveal how threat was passed on by air traffic control

More than 20 aircraft across Europe have been targeted by bomb threats for the second time this week. The UK has described the threats as a “malicious hoax”. BBC Verify analysed messages sent by an aircraft to show how air traffic control passes on an alert when a flight receives a bomb hoax. The report is presented by Thomas Copeland, with additional reporting by Emma Pengelly.