The National Anti-Corruption Bureau of Ukraine (NABU) has completed the first part of an investigation into the 'gas case' against MP Oleksandr Onyshchenko, Director of the Bureau of Artem Sytnyk.

"The investigation into the first part of this case, concerning the persons involved, which are under arrest or under other preventive measures, is scheduled to be completed on Monday... and they [the suspects] will be presented the materials," he said at a briefing in Kyiv.

Onyshchenko is suspected of organizing a criminal scheme to embezzle funds for the extraction and sale of natural gas involving activities of PJSC Ukrgazvydobuvannia, resulting in the loss of UAH 3 billion. He is suspected of committing crimes pursuant to Part 1 of Article 255, Part 4 of Article 28, Part 5 of Article 191, Part 4 of Article 28, Part 2 of Article 205, Part 4 of Article 278, Part 3 of Article 209, Part 4 of Article 28, Part 2 of Article 264-1 and Part 2 of Article 366 of the Criminal Code of Ukraine.

Ukraine's parliament voted to bring Onyschenko to justice, as well as to detain and arrest him. However, on the eve of the vote, Onyschenko fled Ukraine. He was put in the wanted list on August 8.