United Civic Party Chairman Anatol Lyabedzka was charged for participating in an unsanctioned rally. Lyabedzka was detained on March 20.
Belarus' BelaPAN news agency quotes rights campaigner Valyantsin Stefanovich as saying a number of opposition supporters received various jail sentences today.
Official results released by the Central Election Commission say opposition candidate Milinkevich came second in the March 19 presidential election, with 6 percent of the votes. The commission said Alyaksandr Lukashenka won reelection as president.
Milinkevich and his supporters say the election was rigged and are demanding that a new ballot take place.
Opposition supporters have been demonstrating on Minsk's October (Kastrychnitskaya )Square for the past three days.
(with additional material from BelaPAN)