You only have to do a cursory search about encroachment in...

You only have to do a cursory search about encroachment in Thailand.
They have displaced, arrested, 'disappeared' forest dwellers who have lived there for generations. Resorts ordered to demolish buildings, only to find out that land documents were issued illegally.
The list goes on.

This old article gives more detail but remember that the time. 2016, when the goal was to shut down Chatree.
https://www.nationthailand.com/in-focus/30286581

“We have received a complaint that the gold mine may encroach upon public land, as the mining operation is near the highway and the mine has built an alternative road to replace the closed highway. People suspect the mine may take gold ore from the highway land, so we have to investigate this issue,” Phichet said.

Prawut said the DSI team used military Unmanned Aerial Vehicles (UAV) to inspect the mining area from the sky to see if there was any encroachment on public land.