Alleged child s** attacker Oleg Sviridov, 32, kept mobile phone videos of his abuse of several children in Vintai village in the Russia’s Samara region, according to law enforcement officials.

Rocket engine factory worker Vyacheslav M, 34, was drinking with his friend Sviridov, when he saw footage on the man’s phone showing him r***** Vyacheslav’s daughter, now nine.

The father immediately confronted Sviridov, who ran away before Vyacheslav could act. The p********* was a close friend of Vyacheslav’s family and had baby-sat his daughter whom he s******* abused on multiple occasions.

Vyacheslav reported the r**** to local police who launched a manhunt for Sviridov.

But the distraught father managed to track down the alleged p********* before the local police force and stabbed him to death.