The rains set off dangerous mudslides, inundated homes and destroyed bridges
The Office of the Attorney General (OAG) on Friday recommended charges against over 100 people and issued an order to indict the 72 immediately.
They are charged on 16 counts of human trafficking, transnational criminal activity, bringing foreign workers into Thailand illegally and violation of official duty, OAG spokesman Wanchai Roujanavong said.
Thailand launched a massive investigation in May after 33 bodies, believed to be migrants from Myanmar and Bangladesh, were exhumed from various jungle camps near the Thai-Malaysian border, The Bangkok Post reported.