Probe into gas blast at Achinsk refinery in the Krasnoyarsk region.
'The fate of three people is currently unknown'. Picture: Yulia Lebedeva, Channel 7 Krasnoyarsk
Seven other victims were hospitalised as a result of the tragedy which saw a fire sweep through the oil refinery.
'As a result of the fire five people were killed,' the Investigative Committee said in a statement. 'The fate of three people is currently unknown'.
The Siberian refinery is owned by state oil giant Rosneft.
The refinery processes 140,000 barrels a day and the blast was in a 'fractionation unit'.
Facilities, including a library and even a pasta and meat shop, ensure jail in Krasnoyarsk tops the list as the best place to be on remand.
100-year-old woman among the hundreds who party the night away on the banks of a Yakutia river as temperatures fall to -43C.
Probe under way into tragedy of two women and man gunned down by colleague said to have had problems at work.