A teenage lynch mob beat and knifed a suspected paedophile to death in Russia, say police.

Three youths have been detained after a violent film of the 47-year-old-man's beating - shot by a female friend of the alleged killers - was uploaded to the web.

The man had arranged to meet a 13-year-old girl after telling her he wanted sex with her during a social media chat, say police.

A teenage lynch mob beat and knifed a suspected paedophile to death in Russia, say police

The girl arrived for the 'date' with a gang of teenage friends, it was reported.

Footage shows the vigilante teens kicking and beating the alleged paedophile as he lay prostrate in long grass near Efremovo, in the Tula region.

A dozen or more males and females watch as the man pleads for mercy, blood streaming from his nose.

The spectators are seen laughing and cheering while the man is plainly in severe physical pain.

Then the group is seen walking away from the scene.

It is believed the man survived this attack but a group of youths, aged 16 and 17, met him next day on 26 July armed with a gun and knife.

The man had arranged to meet a 13-year-old girl after telling her he wanted sex with her during a social media chat, say police

The man is reported to have died because of knife wounds.

The man was reported to have had a porn video involving underage girls on his social media site.

His friends' list also contained girls in their early teens.

He was reported to have invited young girls to his home and to have offered them alcohol and 'gifts'.

Neighbours confirmed that he was often visited by young girls. It was also reported that he had a previous conviction for burglary.

Footage shows the vigilante teens kicking and beating the alleged paedophile as he lay prostrate in long grass near Efremovo, in Tula region

'The mother of the 13 year old did not pay attention to her complaints about the man,' it was claimed.

Police say the man's corpse had 'signs of a violent death'.

The three teenagers were detained on suspicion 'deliberate infliction of grave bodily harm causing death'.