At least two people have been killed in an explosion at a military base used for missile tests in northern Russia.
In a statement, the country's defence ministry said the explosion occurred "during the test of a liquid propellant jet engine".
"As a result of the accident, six defence ministry employees and a developer were injured. Two specialists died of their wounds," it said.
It's the second accident to hit the Russian military in less than a week, after a fire broke out in an ammunition depot in Siberia on Monday.

Netanyahu says Israel to decide which international forces in Gaza acceptable
More than 8,000 US flights delayed as air traffic control absences persist
Two suspects in Louvre jewel heist case arrested in Paris
Lithuania shuts Vilnius airport, Belarus border for fourth time
Two foreign climbers die in Nepal after expeditions to Ama Dablam mountain
