Relatives of Uladz Hrydzin told RFE/RL on Sunday that he was taken to the Akrestsina detention center and that his trial would take place Monday
According to local news reports, more than 120 marches took places across the country, with numbers at each rally ranging from dozens to several hundred
It was unclear how many people participated in the demonstrations
Scores of protesters demanding the resignation of President Alexander Lukashenko were detained
Demonstrators continue to call for President Alexander Lukashenko to step down after a disputed election
It is the latest anti-government protest fueled by a disputed election 12 weeks ago