Svyatlana Volkava, an actiivst of Tell the Truth campaign, was detained on January 9 at 7 p.m.
Radio Svaboda learnt it from Tatyana Karatkevich, a representative of the campaign Tell the Truth.
Details of the detention are unknown. Karatkevich says the possible reason was distributing leaflets.
Svyatlana called Tatyana Karatkevich on January 9 and said about the detention. She said policemen fingerprinted her, but didn't explain why she had been detained.
An officer on duty at Minsk's Kastrychnitski district police department said today Volkava was likely to be tried in the afternoon.