As reported by Censor.NET, this was said by Prosecutor General Yurii Lutsenko on air of ICTV TV channel.
"We are investigating Medvedchuk's possible ties with Ruban and Savchenko and we are digging into their possible contacts," he said.
Lutsenko noted that the Prosecutor General's Office "has some questions to Ukrainskyi Vybir" but disclosed no additional details.
On March 22, the law enforcers served Savchenko with charge papers and detained her inside the building of the Verkhovna Rada of Ukraine in the presence of journalists after the parliament stripped her of immunity and sanctioned her detention and arrest. She was remanded in pretrial custody until May 20 in a bail hearing held on March 23 after which the lawmaker went on a hunger strike.
On March 21, the members of the Committee on Rules of Parliamentary Procedure and Support to Work of the Verkhovna Rada of Ukraine unanimously upheld motions to detain, arrest, and bring to criminal responsibility non-affiliated MP Savchenko which were subsequently supported by the parliament's majority.
On March 15, Prosecutor General Yurii Lutsenko requested the Verkhovna Rada to strip MP Savchenko of immunity, detain and arrest her. The lawmaker is suspected of allegedly plotting an armed coup through acts of terrorism.
On March 12, Savchenko was summoned for questioning to the Security Service of Ukraine (SBU) due to an investigation in criminal proceedings against Volodymyr Ruban.
On March 8, Ruban was detained at a checkpoint in the Donbas with a batch of weapons. He was delivering these weapons from the occupied territory to the government-controlled part of the Donbas.
Ruban is suspected of plotting armed attacks on senior government officials, preparing a terrorist act with the use of weapons and explosives posing a threat to life and limb of people.