In a school district in Shenzhen, would-be truants dodge surveillance drones that patrol the streets. At a nearby park, office workers pick up takeaway delivered by drones from food delivery app ...

This is not the first time that "black flights" by drones, illegal flights that do not have a permit from the civil aviation regulator, have endangered civil aviation order and security.

MOSCOW, July 24 (Xinhua) -- Two people were killed and 11 others injured in the most recent Ukrainian drone attack on Russia's Sochi, the Krasnodar Krai operational headquarters said Thursday.