CHILLING CCTV footage may show a notorious "granny-killing sadist" who has "murdered 32 female pensioners", say Russian police.

The newly-released video films a man believed to be aged between 27 to 33 prowling around and peering into flats in a Kazan apartment block.

7 The suspect serial killer creeps in through a door Credit: e2wnews

7 He then slips in unnoticed Credit: e2wnews

7 The suspect then slips away as quietly as he came Credit: He then slips in unnoticed

The serial killer has evaded police since a murderous blitz in 2011 to 2012.

During this time he befriended and then throttled almost three dozen elderly women in their own homes across the vast Urals region.

But now investigators fear the just-released footage from October last year shows the 5ft 6 inches "maniac" peeping into flats of possible future victims.

They issued warnings that he could strike again despite a lull of almost five years in his campaign.

They have also re-issued identikit pictures of the man, who is believed to come from the Udmurtia region of Russia, home of the Kalashnikov rifle.

His known victims were all aged between 75 and 90, and police urged pensioners to be vigilant as they issued a new £40,000 reward for information leading to his capture.

7 Russian police outside the apartment of one of the victims Credit: e2wnews

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Police say he appears to kill for the sake of it, although they believe sometimes he stole small sums of money.

They suspect he had access to lists of addresses of pensioners and called on them, initially offering to help them.

He told some pensioners that he was from the council, believe police.

7 CCTV films the man on the stairs and gives a good side profile image Credit: e2wnews

Among the regions where he is alleged to have struck are Sverdlovsk, Chelybinsk, Tatarstan and Samara.

He killed three pensioners in regional capital Izhevsk.

Senior investigator Ivan Streltsov said: "We have serious grounds to suppose that he is a resident of Udmurtia.

"For any information that helps to identify the criminal, we guarantee a payment of 3 million roubles.

"If needed, we will guarantee anonymity."

Mr Streltsov warned such serial killers may pause but "can never stop themselves" - and more murders should be expected if he is not caught.

7 This police e-fit looks strikingly like the suspect in the CCTV film Credit: e2wnews

The murderer has been compared to Russia's worst-ever female killer “Satan in a Skirt”, Irina Gaidamachuk.

Now 46 she was jailed for 20 years after killing 17 elderly women, prompting concerns he is a copycat killer.

Her murderous spree was also in the Urals.

She too pretended to her victims that she was from the council.

7 The terrifying Irina Gaidamachuk Credit: e2wnews

Police pictures of the man describe him as being aged 27 to 33, about 170 cm high, slim body, dark hair, dark eyes, straight nose, middle size lips.

He may be of Tatar appearance and dresses in a dark textile jacket, sports trousers, and trainers.

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