Ukrainian President Petro Poroshenko intends to sign the bill on lustration into law, the president's press secretary, Sviatoslav Tseholko, has said.

"Poroshenko: I decided to sign the law. Lustration should take place! The government staff will be cleared of the KGB agents and the top officials of the Party of Regions," Tseholko wrote on Twitter on Friday.

In his speech in the Lviv National University, Poroshenko said he will sign the law.

"I have comments on the law on lustration, but I want you to know: I will sign this law," Poroshenko said.

At the same time, Poroshenko said that, if he gets any comments form the Venice Commission and the Constitutional Court, or European structures, he will submit these recommendations and comments to the parliament as changes to the law. The president said he is confident that the parliament will back them.

"The entire state administration should be cleansed of Communist Party and Komsomol activists, KGB agents, and top officials of the Party of Regions, who tried to shield us from Europe and lock us in the Customs Union. As a result of the early elections, the Party of Regions was washed down the drain of history and that thing alone made the early parliamentary elections worthwhile," Poroshenko said.

Poroshenko also reiterated that the judicial reform and the fight against corruption are also priority reforms along with the law on lustration. He said he is surprised by some recent court decisions, but has no intention of interfering in their activities in any way, but added that lustration of the judicial system is "vital."

He also said corruption is "the biggest ally of terrorists and mercenaries" and it has to be ended "so that Ukraine can develop normally."

According to earlier reports, the Ukrainian parliament passed the law on lustration on September 16. Prime Minister Arseniy Yatsenyuk said the law will affect some 1 million people. he said the law will affect the entire vertical of the Ukrainian administration.

In the meantime, Ukrainian Prosecutor General Vitaly Yarema told a press conference on Tuesday the law on lustration adopted by the parliament contradicts the Ukrainian Constitution and international norms and its enactment will have negative consequences.