Horrified residents raised the alarm after discovering the decapitated head on the ground outside a block of flats on New Year's Eve.
According to Daily Mirror, the 40-year-old man, whose name has not been released, was arrested and is said to be helping police with their inquiries into the death in the city of Veliky Novgorod in north-western Russia’s Novgorod Oblast region.
The suspect reportedly tried to flee the scene by climbing on to a neighbour's balcony but was spotted by the resident who reported the intruder to police.