...[As] Rohingya flee Myanmar to escape religious persecution, a Reuters investigation…has uncovered a clandestine policy to remove Rohingya refugees from Thailand's immigration detention centers and deliver them to human traffickers...The Rohingya are then...held hostage in a series of camps hidden near the border with Malaysia until relatives pay thousands of dollars to release them…A Thai-based smuggler said some are sold to shipping companies and farms as manual laborers...