Three Vietnamese women were arrested on Sunday at an entertainment hub in Tainan, southwestern Taiwan, for abusing their conditions of stay by working.

Members of the public reported signs of suspected runaway migrants or overstaying visitors from Southeast Asian countries working at the entertainment hub in Tainan’s section of the Provincial Highway 1, The United Daily News reported.

Officers from Shanhua precinct of the Tainan City Government Police Bureau and the National Immigration Agency raided the premises on December 30 and found more than 20 Southeast Asian women accompanying customers as guest relations officers. They were checked and were found to be legal workers.

However, inside the staff room, three Vietnamese women, who entered the country on visa-free travel permits, were found hiding under the quilt in a bed.

They told police they were helping a compatriot who arranged for them to sit with customers. They were paid between NT$1,000 and NT$2,000 daily.

A police investigation found that the first of the three entered Taiwan in June 2017 on her fifth visit, while the second was granted entry for the first time on her fourth attempt in September 2018, and the last woman arrived for three days only.

The three women were not part of a mass disappearance by 152 Vietnamese tourists who recently went missing in the country.

Read: Vietnamese tourists become illegal immigrants in Taiwan