The fire broke out yesterday evening at the storage facility at a military base close to the village of Bolshaya Tura in eastern Siberia. Rescue workers only discovered the victims' bodies the next morning.
"At dawn, as engineers examined the grounds of the military base, a truck was found within the arsenal with 10 people who had died inside," the head of the ministry's press service, Major General Igor Konashenkov, told the Interfax news agency.
The defence ministry said the blaze was sparked by a forest fire that leapt over to the base in strong winds and set fire to a store of ammunition.
The depot's commander had tried to drive the staff to safety but the truck "found itself at the epicentre of a sudden blast as a result of which it burnt up in a couple of minutes," Konashenkov said.
Also Read
The authorities in the Zabaikalye region said today that 23 people were treated for injuries after the blasts, nine of whom were hospitalised with burns and wounds.
Russia is currently experiencing severe forest fires in eastern Siberia and Far Eastern Russia, with an area of around 70,000 hectares ablaze.
Blasts at the vast number of munitions stores across Russia holding defunct explosives dating from the Cold War are a relatively common occurrence due to ageing infrastructure and lax observance of safety rules as well as their locations close to residential areas.
Russia's Investigative Committee, which probes disasters, said Wednesday it had opened a criminal case into causing death through carelessness.