No casualties or damage were reported.The pipeline forms part of the Vertical Gas Corridor, a strategic route that transports gas across Southeastern and Central Europe, linking Greece, Bulgaria, Romania, Hungary, Slovakia, Moldova, and Ukraine. Radev added that the UAV flew at low altitude and carriedThe Bulgarian Defense Ministry later said that an initial examination of the wreckage indicated thatused by the Ukrainian military. He added that Kiev was "establishing all the circumstances of what happened and all the technical facts. "Ukrainian aerial and naval drones have increasingly strayed into neighboring countries, with incidents reported from the Baltic to the Mediterranean. He also withdrew Bulgaria from the so-called coalition of the willing, led by the UK and France, a group advocating stronger support for Ukraine.