“A statement about a crime on the fact of the death of scientist Dmitry Kolker was registered with the Main Military Investigation Directorate of the Russian Investigative Committee, an investigation has begun on it,” RIA Novosti quotes Fedulov.

Earlier, Russian presidential spokesman Dmitry Peskov said that the Kremlin could not comment on the situation with the detention of scientist Dmitry Kolker, who died after being arrested on charges of treason: this is the prerogative of the court.

Before that, it became known about the arrest of Dmitry Kolker.

According to the Novosibirsk State University, he was engaged in the development of radiation sources for medical, environmental and special tasks.

On July 3, members of Kolker's family reported that they had received a telegram announcing his death.