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'.
Investigators also find the lover of the mass murderer's wife: Mikhail Popkov claims his jealously led to him slaughtering at least 81 women.
Grigory Akhara, 21, was unconscious but alive when driver Ulyana Lobanova, 30, and her foul-mouthed husband Roman, 42, refused to back-up.
New confessions mean his female victims now number 69, with at least a dozen more charges expected soon, taking his macabre toll to 81.
Puppies are 'designer' animals bred by South Korean cloning laboratory, but they flunked test in 13 simple skills for Russian police dogs.
Vicious daylight attack in city centre leaves locals shocked, despite later apology from ringleader.
Russia marks Orthodox Christmas Day on 7 January according to the Julian calendar (and for some this is also a time for fortune telling).