A drone hit the roof of the headquarters of the Black Sea Fleet, according to a pro-Moscow official.
They added that there were no casualties in the incident.
It comes after explosions erupted overnight near military bases deep within Russian-held areas of Ukraine in an apparent display of Kyiv’s growing ability to wreak havoc on Moscow’s far from the frontlines.
Meanwhile on Thursday at least four blasts hit an area near the Russian Belbek military airport north of Sevastopol, three local sources said.
The explosions are the latest in a series of blasts at military bases and ammunition depots in the past week in the peninsula that was annexed by Vladimir Putin in 2014.
Earlier this week, Serhiy Bratchuk, the spokesman for Odesa region’s military administration, issued a warning to Moscow.
Mr Bratchuk said: “These fireworks mean that Crimea is coming back to Ukraine.”
It comes as Putin’s nearly six-month war, which he describes as a “special military operation”, grinds on.
MORE TO FOLLOW