Ukrainian Ambassador to Austria Olexander Scherba has trolled Russia's Ministry of Foreign Affairs (MFA) for a reaction to the staged "murder" of Russian journalist Arkady Babchenko in Kyiv, who has turned to be alive as he was part of a special operation of Ukraine's security service.

"I wonder if MFA Russia is satisfied now. Was it investigated fast enough?" he tweeted on Wednesday, May 30.

Read alsoUPDATE: Journalist Babchenko alive: His "assassination" was SBU's special operation

The SBU Security Service of Ukraine reported that the killing had been ordered by Russia's special services and a suspect had been detained.

"Bloody crimes and total impunity have become routine for the Kiev regime. We demand that the Ukrainian authorities make every effort to promptly investigate the crime," the Russian ministry said on May 29 after reports about Babchenko's "murder."