As reported by Censor.NET.
Ministry of Interior Affairs spokesperson Artem Shevchenko has said this to the press.
No suspects have been served with charge papers yet.
Shevchenko also said that not long before his death, Poliakov had stayed in a company of two people.
Read more: MP Poliakov Dies Of Coronary Heart Disease
He noted that Poliakov died as a result of his organism’s reaction to some chemicals.