Vans said to be carrying the bodies of those who were on board the plane that crashed Wednesday were seen on Russian media arriving at the Tver Regional Bureau of Forensic Medical Examination.
The same black vans had been seen at the crash site earlier on Thursday.
Eight bodies were found at the crash site, Russian media reported on Wednesday. Wagner chief Yevegeny Prigozhin was listed as one of the passengers on board the downed plane.
Russian authorities have said efforts will be made to confirm the identity of the victims at the Tver morgue.