The questioning of the suspect in MH17 case Vladimir Tsemakh took place on the eve of his transfer to Russia. He refused the deal with the investigation, ex-Prosecutor General of Ukraine Yuriy Lutsenko posted on Facebook.
“For everyone who whispers or shouts about “betrayal”, I want to say: the Ukrainian side postponed the exchange and did (after my resignation) everything possible in the current situation. Tsemakh’s interrogation took place. He refused the deal with the investigation. We couldn't extradite him to the Netherlands because of the provisions of the Constitution," he wrote.
On July 17, 2019, the Security Service of Ukraine stated that it detained Volodymyr Tsemakh, the ex-militant of Donetsk People’s Republic (DPR), involved in the transportation of Buk missile system, which downed flight MH17. He was detained during the crossing of the border with Russia, on the Ukrainian side.
Tsemakh knew the commanders of the militants, details of the operations and transportation of the weapons. He also could become the key witness in the trial in the Netherlands.
Boeing 777 of Malaysian Airlines, flight number MH17 was destroyed while performing a regular flight from the Netherlands to Malaysia in July 2014. The tragedy took place in the sky over the militant-held section of Donetsk region. All 298 people aboard deceased; most of the victims (196) were Dutch, but there were citizens of another nine countries as well.
The governments of Australia and the Netherlands officially accused Russia of being behind the disaster.