Eight months after a sweeping police crackdown on prostitution in Dongguan, Guangdong province, police raided two karaoke, or KTV, halls and made dozens of arrests.

The two halls were ordered closed for as long as six months, according to a police statement.

Police detained 36 suspects in a raid at the Junhao Hotel on Oct 16, and another 26 were taken away by police in a similar operation targeting the Shengshi Gechao Club on Oct 17, said a statement published on Dongguan city's public security bureau website on Thursday.