This anomalous event occurred at Tovoturinskaya rail station in Tyumenskaya oblast'. For about three seconds a very bright flash appeared at midnight illuminating area of about 400 km. As to the reports there was no sound at all. There are no light sources in this area nor any launch sites.
There are reports from local citizens who saw several lights in the sky at that time and felt low seismic activity.
The bright light in the night also was recorded by several cameras even in Tyumen city that is 400 km away.
No official explanation was given.
More Source: Tyumen