On June 16, 2017, the Detectives of the National Anti-Corruption Bureau of Ukraine (NABU) under the procedural guidance of the Anti-Corruption prosecutors detained a person suspected of embezzlement of gas condensate produced by Public Joint-Stock Company (PJSC) Ukrgasvydobuvannia. The abovementioned person is also suspected in allegedly committing the crime in the so-called «Onyshchenko’s gas case» (the case was directed to the court). On the same day the suspect was given notice of suspicion. It should be reminded that in December 2015 the NABU Detectives started the pre-trial investigation of the criminal proceeding as of the facts of public funds embezzlement while producing and selling gas under joint operation agreements with the PJSC Ukrgasvydobuvannia. As a result, the public property damage reached nearly 3 billion UAH. The investigation revealed that in the scheme were involved 27 persons.

On May 30, 2017, the indictment as of eight suspects involved in the so-called "Onyshchenko’s gas scheme" was sent to the Solomyansky District Court of Kyiv