The Prosecutor General's Office of Ukraine (PGO) has sent a written request to the Security Service of Ukraine (SBU) for information of the involvement of the Russian Federal Security Service (FSB) and Russian President Vladimir Putin's aid Vladislav Surkov in the shooting of protestors on Maidan Nezalezhnosti in Kyiv, Deputy Prosecutor General of Ukraine Oleksiy Bahanets has said.

The request was sent "a few days ago," and the SBU hasn't responded yet, Bahanets told Interfax-Ukraine on Wednesday. "If he [SBU Chief] has posted such information, then please send us the materials, based on which you announced such information," Bahanets said.

In addition, the Deputy Prosecutor General noted that the materials related to the criminal proceedings into the shooting which he had seen was mentioned neither Surkov or the FSB.

He said that he was familiar with the information spread by the media, "but we don't have anything like that in the materials of the criminal proceedings."

As reported, on February 18, SBU chief Valentyn Nalyvaichenko said that Surkov was involved in controlling snipers who shot at demonstrators during the mass protests in February 2014. The SBU chief also said that in late 2013 – early 2014 three groups of FSB employees came to Kyiv to organize the dispersal of protestors.

According to him, former employees of the Alpha special police force had revealed during interrogation where the snipers who shot at protesters and law enforcement officers were placed.

"Investigators have their names, ranks, copies of passports, the dates of their entry and exit, they know which means of communication they used, which offices they attended, and how the aide to President Putin, Surkov, gave them orders in Kyiv..." Nalyvaichenko said.