A Russian historian has been arrested on suspicion of murder after he was found in a river with a backpack containing a woman's severed arms.
Sokolov is a professor at St Petersburg State University and is well known for reenacting moments of Napoleonic history.
Russian Emergency rescuers and police investigators conducted searches on the Moika River, in Saint Petersburg, following the Sokolov's young lover and former student and dismembering her body in a grisly crime that sent shockwaves across Russia. Sokolov has since been taken for treatment of hypothermia and has admitted to murder.
Investigators did not name the man but police speaking to AFP identified him as Sokolov.
Students at the university have since described Sokolov as a "freak", stating he would often do impression of Napoleon and would call his lover "Josephine".
Russian media reports citing authorities allege that he either stumbled into the river while he was drunk, or had jumped into a part of the river shallow enough for a person to stand, in an attempt to dispose of the body parts in his bag.
A distinguished Russian professor chopped up his student-turned-lover and planned on killing himself while dressed as Napoleon Bonaparte - but was instead busted carrying a backpack stuffed with the woman's arms, after drunkenly falling into a river, according to reports.
Sokolov has written several books on Napoleon.
(FILE) - Members of military history clubs wearing 1812-era Russian military-style uniforms march take part in a historical festival to mark the 180th anniversary of the Moscow Triumphal Gates in St. Petersburg, Russia, on October 13, 2018.
Both he and his lover studied French history and liked to wear period costumes, with Sokolov dressing up as Napoleon.
The arrested man is suspected of execute, the police said.
ISSEP announced in a statement that he had been stripped of his position on its scientific committee.
Attorney Aleksandr Pochuyev said on November 9 that his client, Oleg Sokolov, had "signed a plea bargain deal".
ISSEP was founded by Marion Marechal, the niece of Marine Le Pen, leader of the far-right National Rally party.