Russia conducts funerals for 12 of the 20 men killed in a nuclear submarine accident.
Russian prosecutors said the men died from asphyxiation, after a fire extinguishing system was set off unexpectedly, releasing toxic gas.
The majority of those who died were civilians who were carrying out checks on the vessel before handing it over to the navy.
This accident brought back memories of another incident on board a Russian submarine. Eight years ago an explosion on the Kurk submarine killed all 118 sailors.
Basmah Fahim reports.
