13 Russians died when a bus drove of the road in mountainous Russia

https://www.is.fi/ulkomaat/art-2000011377278.html

There were 33 people inside the bus. 20 were injured but survived. The survivorswere able to call help with mobile phones so authorities would knew imediately what has happen.

The region does not have heavy traffic and it could have took some time before anyone notices a bus.

It is a mystery why bus driver suddenly went haywire. Time was 03:30 at midnight.

Since the driver is amongst the dead (everyone in frontside of the bus died) his version of what happened cannot be asked.