It is impossible to draw any conclusions about the cause of the Soyuz booster failure at the moment, Kremlin spokesman Dmitry Peskov has stated.

"It is impossible to draw any conclusions now. He [Russian Deputy Prime Minister Yury Borisov] said that the relevant authorities would now work to figure out what had happened," Peskov told reporters.

According to Sergey Krikalev, the executive director of manned space programs at the Russian State Space Corporation Roscosmos, the special commission investigating the cause of the Soyuz booster failure is expected to present its first findings in late October.

Krikalev noted that the collision could have been caused by a "malfunction of the separation system."