National Police have charged Peterpan frontman Nazriel "Ariel" Irham under Indonesia's strict Anti-Pornography Law in relation to the Peterporn sex tapes scandal.

Speaking at National Police headquarters, National Police chief of detectives Comr. Gen. Ito Sumardi told journalists on Tuesday that Ariel had been detained. "He did not turn himself in but he was turned in by his lawyers on Tuesday morning. He is under arrest," Ito told Detik.com.

Ariel is the only suspect charged in relation to the production of three videos, two featuring current girlfriend and television presenter Luna Maya and a third starring Cut Tari, the host of gossip show "Insert."

Ito said Luna and Cut Tari, who is married, are still classified as witnesses. He said that Ariel was being charged under the Anti-Pornography Law, but would not say what chapter he was being charged with.

According to Chapter 29 of the law, anyone who produces, makes, disseminates, broadcasts, imports, exports, offers, sells, rents or provides pornography can face a minimum six month or maximum 12 year jail term. Fines range from Rp 250 million ($27,700) to Rp 6 billion.

Police as yet have still not been able to determine how the graphic pornographic clips became to be published on the Internet.

Also answering a police summons on Tuesday was Ariel's friend and former Peterpan keyboardist Andika.

He told the reporters that he had been summoned as a witness. "As a good citizen, I am answering the police invitation," Andika said. He declined to comment on the videos. "I don't know, I haven't seen it yet," he said.