Ukraine's fifth president and European Solidarity Party leader Petro Poroshenko said he was ready to answer questions using a lie detector live on television.

"I don't trust the SBI [State Bureau of Investigation], their management. I don't believe this investigation is objective and unbiased. At the same time, I am prepared to voice those questions – and I have a list of them – on Pryamiy [television] channel. I am ready to pass a lie detector live on Pryamiy," Poroshenko said at a briefing in Kyiv.

Earlier today, SBI director Roman Truba said that the next questioning of Poroshenko might involve the use of a polygraph. "We are not ruling out that the next questioning will be carried out with the use of a polygraph. This is nothing to be afraid of: all our staff undergo such psychophysical examination every year," Truba wrote on the Telegram channel.

Poroshenko currently appears in several inquiries, mostly as a witness. Thus, on August 12 he was at the SBI headquarters being questioned in connection with possible tax evasion when purchasing the Pryamiy television channel.