Mayor shivers in minus 5C in protest outside city prosecutor's office in Angarsk.
Probe underway into 50 year old Angarsk maternity hospital medic whose dedication is geared to have cost her life.
Investigators also find the lover of the mass murderer's wife: Mikhail Popkov claims his jealously led to him slaughtering at least 81 women.
At least three are dangerously close to population centres in Irkutsk region.
Irkutsk officials say supplies to major city could run out but Russian government says more analysis of environmental impact needed.
New confessions mean his female victims now number 69, with at least a dozen more charges expected soon, taking his macabre toll to 81.
'Perfect husband and father' axed, stabbed or strangled full-figured women 'who resembled his mother'.
'Werewolf' Mikhail Popkov confessed to reign of terror to 'cleanse' streets of prostitutes, yet relatives say he is innocent.
Former policeman dubbed 'the werewolf' even used his own patrol car to pick up his victims before subjecting them to horrific abuse and injuries.