A suspected paedophile knifed to his own son to death then daubed “I gave you life, I will take it” with the boy’s blood.
Savva Nikitin, 34, had already “confessed to sexually abusing” his son in the Medvedkovo suburb of Moscow.
Nikitin killed his wife Maria who had just found out about him “raping” the five-year-old child and threatened to tell police.
He wrote a message in her blood calling her a “Judas”.
Nikitin stabbed his son named Mark at least 62 times with a knife, say law enforcement sources in Moscow. He is suspected of using a knife and screwdriver to kill his son.
The son of famous Crimean author Alexander Nikitin, he tried but failed to commit suicide with a knife.
He later confessed to police that he had sexually abused the boy and that his wife had confronted him over the sexual abuse
He told officers he killed his son and his wife, say Russian reports.
The chilling quote written in blood on the floor of his flat – “I gave you life, I will take it” – is from nineteenth century Russian writer Nikolai Gogol in novel Taras Bulba.
He also daubed “Masha (Maria) is Judas” on a windowsill in the family’s Moscow flat.
The 29-year-old woman had fought back during a fight and left numerous scratches on her husband’s body before she was strangled, say reports.
In hospital Nikitin confessed to state investigators that he had had “perverted” sex with his son, reported Moskovsky Komsomolets newspapers and other sources citing Russian law enforcement.
He told them that his wife had found about about his “intimate relations” with the boy.
The unemployed man is under 24 hour armed police guard in a Moscow hospital.
A video from Moskva24 news channel shows blood in the flat.
The couple moved to Moscow from Crimea in 2014 when the Black Sea province was annexed by Vladimir Putin’s troops.
They were described as “happy” and “friendly”, living in the Medvedkovo suburb of Moscow.
The Russian Investigative Committee confirmed a criminal probe into the two deaths.
Nikitin faces up to 20 years in jail if convicted of the two murders to which he is reported to have confessed.