Ukrainian President Petro Poroshenko ordered Foreign Minister Pavlo Klimkin to make a request to the European Union representatives to provide the assistance in the investigation of journalist Pavel Sheremet's murder.

"President ordered foreign minister to contact the EU partners for the purpose of inviting the experts for the investigation of journalist's murder," the presidential press service said.

According to the press service, president also requested the assistance of the international experts and discussed with the United States Embassy in Ukraine the involvement of the investigative team of the Federal Bureau of Investigation, forensics experts of which possesses unique methods of examining the explosive devices.

Poroshenko noted the importance of transparency of the investigation and called not to reject any leads.

"I demand to create the operative group. Khatia [Dekanoidze], I request you personally to head this group," president said addressing the Ukrainian National Police chief.

President also requested the Prosecutor General and the Security Service of Ukraine chief to direct the best experts and investigators to this group.

"This is a matter of our honor to take all the measures to solve this crime as soon as possible," he said.

Journalist Sheremet was killed in a car explosion committed by the unknown individuals in Kyiv on Wednesday morning.