Thai and Cambodian groups say that prior notification and consultation procedures for the Pak Lay hydropower project are not transparent.
The groups call for an on-site investigation of the dam collapse to produce credible measurements of the damage it has caused.
State officials will investigate a 'lack of transparency' in the awarding of contracts to build facilities, sources say.
“They just wanted to talk with me about some issues,” she later wrote.
Phijika Boonkwang had resigned on Facebook after being accused of defaming the country over the condition of a local road.
Reports are still coming in from remote areas hit by heavy rains, officials say.