Alexander Smelov, 55, killed in his office in Yakutsk.
The institute director was attacked in his own office on Tuesday. Picture: Institute of Diamond and Precious Metal Geology
A man was arrested on suspicion of murdering the academic, who was director of the Russian Academy of Sciences' Institute of Diamond and Precious Metal Geology in Yakutsk.
'The institute director was attacked in his own office on Tuesday. He died from his injuries,' said Stanislav Platonov, spokesman for the Interior Ministry in the Sakha Republic, also known as Yakutia.
The suspect, a postgraduate student in the institute, was detained in his apartment, reported Interfax.
Documents concerning the case have been forwarded to the Russian Investigative Committee's regional branch.
Marooned men went for up to 3 weeks without food on island in Laptev Sea in temperatures of minus 15C.
As usual there is outlandish speculation about an alien visit, but there is genuine puzzlement and disagreement among experts over the mystery object.
Survivor from helicopter disaster 'used stars and moon' to direct rescuers to crash site: he was only of 3 survivors out of 22 on board.
'Where is the help? Will there be any help?' begged injured Alexey Veremev, 42, as he used cell phone to report air tragedy.