Interior Ministry officials, soldiers and police raiding the site in Bang Lamung district found 253 workers, including 107 women, unable to produce the required pink identification cards, district chief Narit Niramaiwong said.

Another 57 workers, including 18 women, had pink cards but were working outside their permitted areas, he said.

Assistant district chief Praphan Prathumchomphu led 50 troops and police in the 6am raid on the camp on Soi Pattaya 4 in the village of Moo 10 in Tambon Nong Plue.

Also found in front of the camp was a red police box with a sticker identifying it as a “special inspection spot”.