Singapore grindcore outfit Wormrot were arrested by religious police in Kuala Lumpur, Malaysia on New Year's Eve following a performance. The band made this statement:
We were detained in two police stations for two hours [beginning at] 3am by the Jabatan Agama Islam Selangor (Selangor Islamic Religious Department) after they raided the hotel we were staying at, because of the Islamic law stating that unmarried Muslim men and women are not allowed to be in one room. There were seven of us (four boys and three girls) in that room getting ready to chill downstairs at the lobby… They tried to fine us 3000RM ($950 USD) each as well if our organizer didn't call his lawyer, bail us out and the fact that we are foreigners.
Please do not think badly of the religion. Every religion is peaceful. In every religion, there's always some people who are extremists. Don't condemn the religion just because of these jokers.
Like Aceh in Indonesia which has made headlines recently, Malaysia is a diverse, multi-ethnic and multi-religious country so we suggest you check out this Wikipedia page about the somewhat complex way in which Shariah law is applied in the country.