
"The music company has given information on the phone only. This is not enough to seek an arrest warrant," the division's head Maj General Wisut Wanichbut said.
According to him, there are three suspects involved in recording the singers in the toilet while the girls were staying at a hotel in Khon Kaen.
"These suspects are close to the hotel owner," Wisut said.
He said the video clip later slipped into the hands of a woman, who posted it on the Internet.
"Then, manufacturers of pornography have used the clip to make money," Wisut said.
He said laws allow police to prosecute those who posted the clip on the Internet or sold it even without any official complaint from the singer.
"But we believe the ones who recorded the singers should be arrested too. So, we need cooperation from RS," Wisut said.
He said the victims must officially complain against those who broke into their privacy before police could bring them to justice.