A Russian nuclear submarine caught fire Thursday, but officials say there was no radiation leak and no one was injured.

The fire on the Yekaterinburg submarine happened while the vessel was docked for repairs in the northern Murmansk region.

The Russian Defense Ministry said all of the submarine's weapons had been unloaded before the repairs and its reactor had already been shut down. The Delta IV class vessel is able to carry 16 intercontinental ballistic missiles.

Video footage showed large clouds of smoke rising from the area. The blaze is believed to have started on the wooden scaffolding at the shipyard.

In August 2000, Russia's Kursk nuclear submarine sank at sea, killing all 118 crew members on board.