Messages are being examined after flights across Europe were targeted by fake bomb threats, with the incidents described as the second such episode to take place this week.
The analysis focuses on how information about the threat was passed on through air traffic control. The messages provide a record of the way the warning moved between those involved after flights became the target of the hoaxes.
The supplied material does not identify the airlines, airports or specific countries affected, and it does not provide details of any arrests, disruptions or operational decisions resulting from the threats.
The latest information centres on the examination of the messages and the process by which the warning was communicated. Further details about the incidents and their consequences were not included.