A Russian professor and renowned expert on Napoleon has been detained in St Petersburg after he allegedly admitted murdering a female student.
Oleg Sokolov, 63, was hauled from the Moika River in St Petersburg on Saturday, and a rucksack was found containing two severed human arms.
Police later identified the arms as belonging to a female student, and said it had found other body parts in Sokolov's home, close to the river.
His lawyer, Alexander Pochuev, said Sokolov has confessed to the murder of one of his former students.
Officials say that Sokolov fatally shot Anastasia Eshchenko, 24, on Thursday, then dismembered the body.Sokolov is being detained in prison for two months pending a trial, after a court rejected his lawyer's request for him to be released under house arrest.
In court, Sokolov broke down in tears, and gave an account of an argument he had with Ms Eshchenko - but stopped short of giving more details.