MOSCOW (AP) — A massive fire engulfed a Russian nuclear submarine at an Arctic shipyard Thursday, but there has been no radiation leak, or injuries, officials said.

The fire at the Yekaterinburg nuclear submarine occurred while it was in dock for repairs at the Roslyakovo shipyard in the Murmansk region, said Irina Gretskaya, a spokeswoman for the Emergencies Ministry's branch in the area.