"The chief of Ukraine’s security service will have to pass the lustration check after the appropriate commission verifies his documents," Petrenko said.

As UNIAN reported earlier, SBU Press Secretary Markiyan Lubkivskiy said he could be involved in the lustration process in the SBU, as could Nalyvaychenko.

Ukraine's law on lustration is legislation designed to root out corrupt officials from Ukraine's system of government.