The site, at Phnom Bath mountain, is 50 kilometers outside the capital and lacks clean water, electricity, and health care facilities.
Prime Minister Hun Sen has said there will be no political deal and that Sam Rainsy’s cases are matters for the courts.
Campaigning for the Senate election, which is held for representatives of eight regions, will go from Jan. 7 to Jan. 27.
About 13,000 political officials of the Cambodian People’s and Sam Rainsy parties will vote in the election.
Moek Dara is accused of abusing his post to gather hundreds of thousands of dollars in bribes and organizing drug trafficking.
According to Adhoc, there are more than 15,000 prisoners nationwide in a detention system that cannot hold them.
The Mekong River Commission was made in 1996, a year after the inception of the 1995 Mekong Agreement.
Chea Vichea was a powerful labor leader able to amass large rallies, his killers have never been brought to justice.
At least 20 people, including some police and military police were injured, and at least 12 people were arrested.
Chhoung Chu Ngy briefly disappeared on Thursday last week, but he appeared shaken before a press conference on Friday.
Across Asean there is a diversity of political systems and leadership, as well as wide economic gaps.
In a meeting this week both foreign ministers said they would speed up negotiations over joint development in offshore blocs.