''I am not satisfied that we did not find Sheremet's killer,'' - Poroshenko

Poroshenko commented on Sheremet's assassination during the press-conference, Censor.NET reports.

"I knew and loved Pavlo. I can say that we were friends. This terrorist attack, this cynical murder shocked me," the president said.

Watch more: Persons who planted explosives into Sheremet's car filmed by surveillance cameras. VIDEO

Poroshenko said that after the assassination he asked foreign embassies for an assistance. FBI representatives, in particular explosion experts and forensic experts, were involved into this case.

''I am not satisfied that we have not found the killer yet and brought him to the court," Poroshenko said.

Read more: Probe into Sheremet's murder revised following published journalist investigation, interior minister says

He thanked the journalists who conducted their own investigation and promised that all materials will be attached to the case.

As reported, May 10, OCCRP and Slidstvo.Info journalists made public their investigation of the murder of Pavel Sheremet, which was committed in Kyiv on July 20, 2016.

The prominent journalist Pavel Sheremet was killed in a car bombing in downtown Kyiv on Wednesday morning, July 20. According to witnesses, the explosion occurred when Sheremet stopped at an exit to a main road.