Dennis blah cove, 27, after the ball - known as leisurely wave - deviating from the course, and in the north Caucasus region into a deep canyon. His friend was badly injured.
On January 3, in Dombai ski resort filming terrorist incident.
Authorities are trying to determine whether death because "by providing safe service".
They say they want to question the leisurely wave game owners, according to the report, in the operation.
Extreme sports
Through the, blah cove friends of the shooting video shows how to leisurely glass first roll off the target path - but then suddenly rebound process.
Leisurely wave at the foot of the mountain to wait, and then saw a man tried to grab it before, the transparent ball falling nearly 1 km deep canyon below Achitara general installation.
Ball finally stop at the ice on the lake.
Blah cove due to injury, death, his friend vladimir Shcherbov, 33, is still in the hospital.
Zorbing - effectively put him down slope, in a giant ball - in New Zealand invention in 2000, is now popular extreme risk movement in all over the world.
It involves a huge plastic ball, there are two layers of skin - an internal other and between air pump. This as a shock absorber riders, who is in the middle of the ball.
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