President of the European Council, former Prime Minister of Poland, Donald Tusk will arrive in Warsaw for interrogation in prosecutor's office on April 19, Radio Poland reported.

The Polish prosecutor's office noted that Donald Tusk is called for giving testimony in the case of cooperation between the Military Counterintelligence Service (MCS) of Poland and the Federal Security Service of Russia.

Earlier, the ex-prime minister of Poland was called for questioning on March 15, however he couldn't arrive, as he was participating in the plenary session of the European Parliament in Strasbourg.