The future of project is unclear, and many families have already been moved from proposed railway improvement sites.
At least 200 people took part in the five-day campaign, which ended Wednesday and covered four provinces.
The March 30, 1997, attack on an opposition rally killed 16 people and wounded hundreds more.
Chan Cheng is accused of helping Meas Peng flee detention after Meas Peng was accused of incitement during land protests in Kandal.
An Australian newspaper reported Monday that Australian police suspect Hun To of “heroin trafficking and money laundering.”
Cambodia has 2.3 million hectares of land under concessions, a new report by the rights group Adhoc says.
Chhouk Bandith was questioned by the provincial court last week but walked away without being held.
At least 12 Cambodians were reported dead in Malaysia in 2011, nine of them housemaids and three of them factory workers.
Rights groups and opposition party officials say the practice rarely meets with success and is an indictment of a failed court system.
Environmental activists say he was a major impediment to stopping illegal logging in the province.
Criticism has been particularly harsh after a report was released last year by the U.N. Special Rapporteur for Trafficking in Persons.
A third victim dropped her complaint after receiving around $1,000.