"Police officers in civilian clothes came to Milinkevich's office and said he had been summoned to the Minsk Prosecutor's Office," Pavel Mazheika.
He said the summons was related to an upcoming protest action timed to coincide with the 20th anniversary of the Chernobyl catastrophe, the world's worst civilian nuclear disaster.
Milinkevich was one of three opposition candidates against President Alexander Lukashenko in presidential elections March 19. Lukashenko, dubbed "Europe's last dictator" by Washington won a landslide victory with 83% of the vote in a ballot the opposition and international observers said was fraudulent.
Opposition activists subsequently staged a five-day sit-in in Minsk's central Oktyabrskaya Square. A demonstration March 25 was broken up by police, and opposition representatives say at least one person died as a result.
Tuesday, a lawyer acting for another opposition candidate was charged with hooliganism. Igor Rynkevich said the trial is politically motivated and is an attempt to exert pressure on the defense team for Alexander Kozulin, himself facing up to five years in prison if convicted on public order charges.
