The bubble-gum pop twosome are reported to be devastated about the clip, which has been posted on the Internet and is being sold as underground porn.

Their record label RS officially lodged the complaint. Representative Suttisak Prasartkarukarn says filming the singers is criminal. It is a civil wrong, too. The company is thinking about seeking damages in court from whoever is responsible.

Four, otherwise known as Sakonrat Wora-utai, 22, and Mod, aka Kunachaya Chairat, 17, were in tears when informed the other day.

The filming is said to have taken place at a Khon Kaen hotel.

Police women-and-children division chief Wisut Wanichbut says search warrants will be sought so they can go after the filmmaker and Internet posters.

He warns anyone who's downloaded the video naughty to get rid of it. He says the police can track illegal stuff on the Internet quickly and accurately.

The record label demanded downloaders delete it, too, and those selling it to stop.

"Please, empathise with the singers," he says.

Wisut says the police get similar complaints all the time that don't receive this kind of media attention