A HUGE explosion at a ballistic missile testing facility in Russia has killed two people and started a radiation leak.

A further four people are said to have been injured.

4

The two people that died were civilian specialists while those who were injured were a mix of civilians and military personnel.

The military unit where the fire occurred is located in the village of Nenoksa, near Arkhangelsk, where ballistic missiles are tested for the Russian Navy.

The blast at the military training ground near Arkhangelsk was due to a jet engine exploding, the press service of the Ministry of Defence said.

A source told RIA News in Russia: "Hospitals in the Arkhangelsk region are ready for the possible reception of the victims of the incident near Nenoksa."

Russian officials initially tried to play down the radiation leak, saying the levels were normal.

A statement from the ministry said: "During testing of a liquid jet engine an explosion and combustion of the product occurred.

4 The engine exploded on a military base near the district of Severodvinsk Credit: Getty - Contributor

"As a result of the event, six defence ministry officials and developer company representatives received injuries of varying severity. Two specialists died from their injuries.

"There have been no harmful chemicals released into the atmosphere, the radiation levels are normal."

But regional authorities later admitted there had been a "short-term" spike in radiation levels after the explosion.

Ksenia Yudina, a spokeswoman for the city government in Severodvinsk said: “A short-term rise in background radiation was recorded at noon.”

Admiral Vyacheslav Popov, former commander of the Northern Fleet, said of the test site near Nenoksa: “This is a current test site of the Navy, where the test benches are located, including liquid-fuel engines for new sea-based ballistic missiles.

“It was probably during such tests that an explosion occurred.”

The Russian city of Arkhangelsk is the north-east of Russia and was once the country's main seaport until 1703.

most read in world news GANGSTER NO 1 New 'El Chapo' seizes control of Mexico gang that sets rivals' heads on fire BUSTED Argentine MP caught kissing & fondling his girlfriend's boob during virtual debate HEIR FORCE ONE Meghan 'would consider running for President if she ditched Royal title' CREEPY CRAWLERS Dozens of horrifying 3ft-long robber crabs invade family's campsite BBQ Latest CLEAVER HORROR Two hacked with meat cleaver near Charlie Hebdo office in Paris 'terror act' FIT AND FIFTY 'World’s hottest gran' celebrates 50th as fans praise her youthful looks

Last Monday a massive fire erupted at a military ammunition depot near Achinsk in eastern Siberia's Krasnoyarsk region.

The blaze triggered a number of explosions that continued for around 16 hours, leaving one person dead and injuring 13 more while more than 16,500 people had to be evacuated from their homes.

Earlier this year 14 people were killed during a fire on a Russian submarine which was a nuclear spy vessel thought to be on a secret mission.

4 The military base is a test site for ballistic missiles for the Russian Navy Credit: Handout

4 Smoke from explosions at a military ammunition depot in the village of Kamenka, Achinsk Credit: Getty - Contributor

We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips@the-sun.co.uk or call 0207 782 4368. You can WhatsApp us on 07810 791 502. We pay for videos too. Click here to upload yours.