Russian's state nuclear company says five people were killed in Thursday's rocket explosion on a naval test range.
A statement from Rosatom said three people were also injured in the incident.
They say the staff members suffered serious burns in the accident, which has been shrouded by mystery.
On Friday Russian government sources said two people died and six were injured in the Nyonoksa blast.
Russia opens negligence probe after 9 babies die in same Siberian hospital
Russia has opened a criminal investigation into the deaths of nine newborn babies this month due to suspected negligence at a Siberian maternity hospital, authorities said on Tuesday.
Russian strikes on Ukraine kill four, knock out heat and power
Russia struck cities across Ukraine with missiles and drones overnight in one of its biggest attacks of the New Year so far, killing at least four people and knocking out heat and power, exposing millions to dangerous winter cold.
BBC seeks to have Trump's $10 billion lawsuit dismissed
The BBC will file a motion to dismiss US President Donald Trump's $10 billion lawsuit over its editing of a speech that made it appear he had directed supporters to storm the US Capitol.
Venezuela says 116 prisoners released, rights groups cite much lower figures
Venezuela's government has announced on Monday that 116 prisoners have so far been released as part of process announced last week, though rights groups reported a lower figure as family members of the detained awaited liberations, with some sleeping outside prisons.
Australian teen charged with making hoax mass shooting calls in the US
A teenage boy from regional Australia has been charged with calling in false reports of mass shootings at US retailers and educational institutions that allegedly caused widespread alarm, police said on Tuesday.
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