By The Nation
Pol Maj Gen Surachate Hakpal, acting immigration police chief, said the arrests were made on Wednesday after a tip-off that a group of Chinese men rented two houses in Tambon Nong Plue of Bang Lamung district but they have never left the house.
Police found the men, aged from 18 to 40 years, working in the houses and seized 22 notebook computers and 28 mobile phones.
The 13 had 90-day visas to stay in the kingdom.
They confessed that they were hired by an illegal loan gang in China to call some 2,000 debtors in China to repay their loans with interest.
They face charges of working without a work permit and will be deported, Surachate added.