A day of mourning was announced by the city where Russia's main nuclear research facility is based, on Sunday 11th August for five staff killed during a missile test that caused elevated radiation levels, according to AFP.
Five nuclear agency staff were killed by a blast, during testing of a nuclear-powered missile at an Arctic military facility on Thursday, August 8th, Russian official media has said.
The closed city of Sarov in the Nizhny Novgorod region, about 500 kilometres (300 miles) east of Moscow, announced 24 hours of mourning from 1 pm (1000 GMT) Sunday, August 11th, with flags lowered and entertainment events cancelled, RIA Novosti state news agency reported.
The decree by the city chief said the five killed were staff of the Russian Federal Nuclear Centre.
The Rosatom nuclear agency said memorial services would be held Monday August 12th.
During the Cold War, Sarov was a top-secret city known as Arzamas-16. The centre was the birthplace of the Soviet Union's first nuclear weapons.
Sarov is still a closed city only accessible to those with special passes.
Vladimir Putin visited the nuclear research centre in 2012 while campaigning for president.