Nurdin Hasan, Banda Aceh – Scores of young people vandalized a shariah police office and injured a religious police officer in the early hours of Tuesday morning after the Islamic authority broke up a gathering in Langsa, a religious official said.

"Around 1 a.m., one Wilayatul Hisbah [shariah police] team of 12 conducted an operation in the former Cafe Citra building on Jalan A Yani in Langsa because a 'drinking party' was said to be going on," Ibrahim Latif, the head of the Langsa city shariah police told the Jakarta Globe.

"It was also a 'sex party' because men and women who were not related were mixing," he added.

He said that local residents tipped off the shariah police, saying that noisy activities were held at the building every evening until the early hours. "They were in an intoxicated condition and their breath had a strong smell of alcohol" Ibrahim said.

The shariah police arrested three men and one woman, their ages could not be confirmed, and detained them in handcuffs at the local police office. Several people then descended on the office in Langsa, vandalizing the interior, damaging two motorcycles and injuring a Wi-Ha officer.

The violence was the second incident this year against the shariah police in the area. On Aug. 25, dozens of shariah police members were mobbed by local youths while trying to disband a musical performance in Karang Anyar village in Langsa Baru subdistrict.

Ibrahim said that the attack would not discourage the shariah police from enforcing the religious law in Langsa.

"I am not afraid of enforcing the Islamic shariah, even though I will face resistance," he said. "It is this very resistance that is motivating me and the Wilayatul Hisbah members to continue to hold raids against violators, so that they know we are not afraid."

Aceh is the only part of predominantly Muslim Indonesia allowed to implement partial shariah law, granted as part of autonomy following the 2005 peace pact between the government and separatist rebels which brought an end 30 years of war.