Police said on Wednesday that they were still investigating TV celebrities and models Luna Maya and Cut Tari for sex tapes allegedly featuring them with rock star Nazril "Ariel" Irham.

Insp. Gen. Saud Usman Nasution, a National Police spokesman, said the case had not been dropped but that it was difficult to find sufficient evidence to complete the dossiers.

Ariel was convicted of porn distribution in January last year after the videos were distributed on the Internet. He was sentenced to three years in prison, despite insisting that the videos had been leaked without his knowledge.

Neither Luna, Ariel's girlfriend, or Tari, who was married at the time, have been charged.