According to the preliminary version, the cause of the emergency was that one of the locks holding the spacecraft did not work.
RIA News reports that the device on the eve received an impulse to descend from orbit. The news agency cites a statement by an interlocutor familiar with the situation:
The impulse to de-orbiting the orbital bundle was given by the Russian 6 specialists in December, when it became obvious that the satellite’s full-time branch did not occur.
It is noteworthy that the source RIA News, continuing to provide information, refers to the US strategic command:
After the impulse, the object abruptly changed its orbital position and began to strike the atmosphere, according to open data from the US strategic command. "Canopus-ST" together with the emergency accelerating unit "Volga" "are completely inoperable due to serious braking damage received while entering the upper dense layers of the Earth’s atmosphere.
Experts believe that the debris of the spacecraft to the surface may not reach, burning in dense layers of the atmosphere. Ministry of Defense space incident leaves no comments.