Thirty-eight police officers working in the South have been transferred to inactive posts in the wake of the discovery of mass graves at illegal Rohingya migrant detention camps in Songkhla.
National police chief Somyot Pumpunmuang signed the order on Wednesday.
Police working in areas where the bodies of illegal migrants were found and officers who were responsible for human trafficking suppression have been transferred to the Royal Thai Police operations centre.
A committee will be set up to investigate them, Thai media reported on Thursday.
The 38 officers include senior police working at Provincial Police Regions 8 and 9, the Marine Police Division, and the immigration bureau.
The transfer order takes effect today.
Thai media reports said immigration police who were transferred work at migrant checkpoints and offices in Songkhla, Padang Besar, Ranong and Satun.
Police spokesman Pol Lt Gen Prawut Thawornsiri said on Thursday the 38 officers will face a disciplinary investigation. Any found to be involved in human trafficking will face harsh punishment.
The move follows the discovery of dozens of graves and bodies, believed to be illegal Rohingya migrants, at abandoned jungle camps in Padang Besar, in Sadao district of Songkhla, and Phangnga, where 10 graves were found in Takua Pa on May 5.