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.
Rubio tells Munich security forum US, Europe belong together
US Secretary of State Marco Rubio gave a message of unity to Europeans on Saturday, saying Washington does not intend to abandon the transatlantic alliance, but that Europe's leaders had made a number of policy mistakes and need to change course.
Canadians 'will always be with you' says PM at Tumbler Ridge vigil
Canadian Prime Minister Mark Carney told grieving residents of Tumbler Ridge, British Columbia, on Friday that Canadians "will always be with you" at a vigil to mourn victims of one of the country's worst mass shootings.
UN Chief urges unity as Ramadan approaches
UN Secretary-General António Guterres issued a message to the international community on Friday, as the holy month of Ramadan approaches, emphasising that the sacred period is a time for reflection and prayer, embodying a vision of hope and peace.
BNP sweeps Bangladesh election, Tarique Rahman set to become PM
Bangladesh Nationalist Party (BNP) won a landslide parliamentary election on Friday, returning to power after nearly two decades and positioning party leader Tarique Rahman to become prime minister.
