 The Investigative Committee ordered a psychiatric evaluation of Roslyakov postmortem.Crimean Prime Minister Sergey Aksyonov stated on 18 October that it was possible the perpetrator had an accomplice, and police were searching for the individual "who was coaching" Roslyakov for the crime.However, on 9 November 2018, the Investigative Committee came to the conclusion that Roslyakov had acted alone.