The two men could face up to 15 years in jail if found guilty.
The decision is a setback for the victims and rights advocates who had high hopes for a favorable resolution to the case.
U.N. refugee agency special envoy Angelina Jolie calls on NATO to help stop use of sexual violence as weapon of war, as Hollywood star broadened her international efforts to protect women's rights.
Cambodia is home to more than 3,000 NGOs which provide a wide range of services where government support is lacking.
The families were forcefully removed from their homes in Chitres village, Botum Sakor National Park.
The report, “Freedom in the World 2018”, found that 2017 was the 12th consecutive year of decline in freedom globally, including Cambodia.
Among the report's major findings was the weakening of the United States as a champion of democracy.
Every year on the third Monday in January, Americans honor King.
Kim Sok was an outspoken analyst prior to his arrest and regularly criticized the government in the media.
Chea Vichea was killed on January 22, 2004, while he was buying his morning newspaper.
Evictees argue that the new property will cause a significant dent in their already modest incomes.
The statement comes amid growing tensions between Cambodia and the United States over Prime Minister Hun Sen’s government’s crackdown on political opponents and civil society.