Muslim men shout slogans during a rally against U.S. pop singer Lady Gaga outside the U.S. Embassy in Jakarta, Indonesia, Friday. By Alastair Jamieson, msnbc.com Lady Gaga has canceled a sell-out concert in Indonesia amid security fears following threats from Muslim hardliners over her provocative outfits, it is reported. Questions were raised about the Born This Way Ball in Jakarta after the extremist Islamic Defenders Front predicted violence if it went ahead, calling the singer a devils messenger who wears only a bra and panties on stage, according to an Agence France-Presse report published by Al-Arabiya. Lady Gaga refused permit for Indonesia show following religious protests He said: "With threats if the concert goes ahead, Lady Gaga's side is calling off the concert. This is not only about Lady Gaga's security, but extends to those who will be watching her." Indonesia is a secular nation, but with a population of 240 million has more Muslims than any other country in the world. American pop singer and songwriter Lady Gaga waves to the crowd upon her arrival in Manila, Philippines, earlier this month. The Jakarta show would have been the biggest performance on Lady Gaga's Asian tour, and more than 50,000 tickets had been sold, the BBC reported. Promoters said they would offer refunds. According to music news site NME.com, the singers tour kicked off in controversy in April after authorities in Seoul, South Korea implemented a strict adults only policy at her show, banning anyone under the age of 18 from attending her first tour date. The Associated Press contributed to this report.