Leang Sok Choeun was sentenced alongside two other men for reportedly distributing anti-government leaflets in 2009.
Although violence against writers and academics in Cambodia has decreased in recent years, many say they still face strong censorship.
A group of 23 human rights NGOs issued a statement Tuesday condemning ongoing violence by state security forces against civilians.
Thirteen of the representatives are currently at Prey Sar prison, facing jail terms between one year and two-and-a-half years.
Loun Savath has become a common figure at land protests, vexing Cambodia’s Buddhist leadership.
The 13 women were found guilty of illegally taking land and resisting public officers.
Guide by Geneva-based NGO Interpeace summarizes decades of best practices.
Around 50 demonstrators gathered in front of Phnom Penh municipal court Wednesday morning, where they stayed all day.
Police officials have said they want to question Mam Sonando in relation to the alleged movement in Kratie province.
City officials could not be reached for comment, but rights workers said they expect the 13 detainees will appear in court Wednesday.
Authorities say they want to arrest Bun Ratha for participating in an anti-government movement, alongside other suspects in Kratie.
Two demonstrations—one of factory workers and one of displaced city residents—were held on Monday.