The version of a terrorist act on A-320 that crashed into the Black Sea doesn't prove true, head of the North Caucasian internal affairs department of transport Igor Zhukov told journalists. "According to the data provided by the Azov-Black Sea internal affairs department of transport, the fact of a terrorist act doesn't prove true. There are several versions. The catastrophe took place either through the pilot or the control officers' fault," he said, reported RIA Novosti.