Black Hornet Nano - known as just 'Black Hornet' - is one of the smallest types of surveillance drones created by Teledyne.
Several explosions reportedly echoed through the town moments before the fire broke out
This is the moment a bright fireball lights up the night sky above a city before it burns up and disappears into the atmosphere.
Russian servicemen attend a practice for sabotage operations behind enemy lines at a training ground on an undisclosed location (Picture: AP)
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