Electricity from Ukraine to the Russia-annexed Crimean peninsula has been cut again after the collapse of a power pylon.

Ukraine's electricity supplies to Crimea had been partly restored after towers were blown up in November, but the collapse early Thursday again cut the flow. News reports said Ukrainian police suspect the collapse was also caused by an explosion.

The November outage left Crimea severely short of power for two weeks before Russia, which annexed the region in 2014, was able to rush completion of two undersea cables that sizably boosted power.

The downed power line filled about 10 percent of Crimea's electricity demand, said the Russian news agency Tass.

Russia aims to complete two more undersea cables in the spring and to make Crimea independent of Ukrainian electricity.