Kazakh officials say four people have been killed in the crash of a Soviet-era Mi-17 military helicopter near the capital Astana.
Officials said the helicopter went down on August 22 during what was described as a training flight.
Unconfirmed reports said that one of those killed was a top official of the Kazakh president's security service.
An interdepartmental commission has been set up to investigate the crash.
The former Soviet republic of Kazakhstan still relies on outdated and often poorly maintained aircraft built during the communist era.
Based on AP and ITAR-TASS and Interfax