On October 28, 2016, the beheaded body of 19 year old Artyom Shustov was found in a park in Komsomolsk-on-Amur, in the far east of Russia, by railway workers. According to Russian authorities, he was beheaded with a kitchen knife by 16 year old Nikita Rasskazov allegedly because of jealousy over a girl.
Nikita Rasskazov, who had meanwhile been arrested, reportedly confessed to killing Artyom Shustov by stabbing him twice in the chest, then decapitating his corpse, and then throwing the severed head in the Amur River, though some sources claim he first showed the head to the girl.
The girl the killing was allegedly over was identified as 17 year old Olena Matsneva.
Props to Jeff for the tip: