"After the High Council of Justice began work, about 300 judges must have been fired already," he told Inter TV Channel on Friday evening.

According to Poroshenko, the Prosecutor General's Office (PGO) is going to ask the Ukrainian parliament to strip several judges of their immunity from prosecution on Tuesday and to authorize their arrest, according to online publication Ukrainska Pravda.

What is more, Poroshenko announced he knew that the PGO was "preparing quite a lot of requests" to strip some lawmakers of their parliamentary immunity.

In his words, public officials' immunity is a vestige modern Ukrainian society must get rid of.