Police in the northern province of Nam Dinh on Tuesday arrested four people who allegedly forced poor women into sex work.
Officers have identified the suspects including Le Thi Thanh Dam, 22, and her boyfriend. Both are unemployed, police said.
Dam mostly targeted poor, ethnic women from northern mountainous areas, who were desperate to find a job and who did not have opportunities to double-check any employment offer.
By promising purportedly good and well-paid jobs, the group managed to sell five women for between VND5-10 million (US$225-450) each last year to a guest house in Nam Dinh, where they had to do sex work.
Three of the victims have escaped and reported the case to the police, who have also rescued the other two victims.
One woman said Dam hired her to babysit her daughter for VND5 million a month.
“I thought she was taking me to her house, but actually she was delivering me to a guest house,” the victim said.
The guest house's owner was among the arrestees.