Two Held Over Drone Use at London Airport Are Released

WSJ.com: WSJD - Technology 

On Sunday, police said both individuals had cooperated fully and were no longer suspects, adding that they were continuing to follow leads in their investigation. The airport offered a £50,000 ($63,200) reward for any evidence that leads to the conviction of those responsible for the disruption, police said. Drone use around commercial flights is a growing safety concern for regulators. Prosecutions when drones are flown too close to commercial planes are rare, and some instances of drone sightings by commercial airliners have turned out to be inaccurate. This month, authorities in Mexico investigated a potential collision of an Aeromexico jetliner with a drone.