The prime minsiter said the amount of explosives it was carrying was 'significant'

A drone that entered Bulgaria on Saturday exploded near the Romanian border and the Trans-Balkan gas pipeline, which links Turkey to Ukraine, the prime minister said.

Rumen Radev did not specify where the drone, which caused no casualties, came from and said authorities did not yet know what type it was.

But he said the amount of explosives it was carrying was “significant”.

“The drone exploded in the immediate vicinity of the Kardam border crossing with Romania,” near the Black Sea in the country’s northeast, “1,000 metres from the Trans-Balkan gas pipeline’s compressor station,” he said in a video.