About 100 drones lost control and crashed into a building during a show in Southwest China's Chongqing Municipality on Monday night. According to a video and photos circulated on the internet, a large group of drones with flashing blue lights displayed abnormal actions during the performance.
According to the local sources, dozens of drones moved slowly towards the building, with some crashing into it and others directly dropping from the air to the ground and falling into the river. Several people said that event organizers were not able to control the drones.
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A person familiar with the matter later disclosed that a crash in the mainframe control led to the incident, in which up to 100 drones lost control and malfunctioned. Although there were no injuries, the incident resulted in huge economic losses for the show designers.
Source- Global Times