Surya Subedi, the human rights special representative for the UN secretary-general, is on a 10-day mission that ends later this week.
Meanwhile, Surya Subedi, the UN’s special envoy for human rights is in Cambodia to assess the courts.
The uprisings in Egypt and Tunisia surprised the world, deposing two long-term autocrats and sparking similar unrest across Arab states.
Callers expressed skepticism over implementation of the law and the independence of the Anti-Corruption Unit.
Ros Sovannareth was the second Free Trade Union activist of three killed in 2004.
Cambodia is facing an overcrowding of its jails, with an estimated 14,000 prisoners across the system in 2010.
Yoeung Baloung was supposed to be serving 13 years on charges related to illegal logging.
The Ministry of Interior last week said it was adjusting provisions in the law that were main areas of concern for many NGOs.
Organizations are worried the new law, which seeks tighter regulations, would inhibit the growth and develop of the country.
The Cambodian government denied the findings of an annual Human Rights Watch report.