Roskosmos management has reviewed and approved the report provided by the Russian working group investigating the Proton launch anomaly during the Yamal 402 mission and have provided the report to Khrunichev State Research and Space Production Center (Khrunichev). The findings on the identified most probable root cause of the anomaly and the required corrective actions will be released to ILS after the report clears Russian security during the week of 21 January.

Source: Roskosmos management releases investigative commission's report