The Security Service of Ukraine (SBU) will soon report about the involvement of Vladislav Surkov in mass murders in February 2014.

This was announced by adviser to SBU chief Markiyan Lubkivsky at a briefing on Wednesday when asked a respective question.

"We haven't forgotten about this," Lubkivsky said.

As reported, the SBU handed over materials to the Prosecutor General's Office of Ukraine, which confirmed that Russian President Vladimir Putin's adviser Surkov had come to Ukraine amid protest rallies on Kyiv's Maidan Nezalezhnosti (Independence Square) in winter 2014.

At the same time, the SBU said it had no information about Surkov's involvement in orchestrating shootings on Maidan during which more than a hundred Ukrainian activists were killed.