A series of explosions have rocked Crimea, after a reported Ukrainian drone attack on the peninsula which was illegally annexed by Russia in 2014.
Video posted online shows a blast allegedly near a fuel depot in the south-eastern city of Feodosiya.
Russian officials said 38 drones had been shot down. The Kerch bridge which connects Crimea with Russia was temporarily closed.
The attack comes as Ukraine continues to urge allies to boost arms supplies.
Russian troops have recently made gains in Ukraine as Kyiv struggles to sustain its forces with Western-made arms. Moscow took control last month of the key eastern town of Avdiivka.