First Deputy Chairman of the Verkhovna Rada Iryna Gerashchenko has stated this at a plenary meeting, an Ukrinform correspondent reports.
"Today the Russian Federation keeps at least ten political prisoners and separately more than 30 Crimean Tatars, who also became the Kremlin's prisoners, and whom Russia uses to blackmail Ukraine and the world", she said.
According to Gerashchenko, there are 109 hostages on the occupied territories. "Putin has all of the keys [for their release]," the MP said.
In her opinion, it is necessary to increase pressure on Russia in order to release Ukrainians.