Shevchenko said the identity of the attacker has been officially confirmed.
"It's a person who's changed his name many times. The investigation knows them all but does not say which one is legal at the moment. We mean Denisultanov-Kurmakaev," Shevchenko told the news outlet.
He said the investigation has some difficulties with establishing Kurmakaev's citizenship.
It has been found that the suspect had committed a number of other crimes while being in Ukraine.
In the evening of June 1, an attempt was made on the lives of Chechen volunteer fighters of Ukrainian Kyiv-2 unit, Donbas war participants Adam Osmaev and Amina Okueva in Kyiv's Podil district. The attacker passed himself as a foreign journalist who allegedly wanted to interview them, got close to them, opened fire from a gun, and wounded Osmaev. His wife Okueva, to protect herself and repulse the attacker, opened fire and gravely wounded the killer. Both men have been taken to hospital with grave wounds. Osmaev is convicted by Russia of alleged attempt on President Putin.