The website of the Ministry of Health was hacked on January 3 evening by a hacker group calling themselves the "Muslim Cyber Army."

It appears that the group is of Indonesian origin.

Interestingly, this happened weeks after Health Minister Rajitha Senaratne publicly refuted a report by the country's Justice Minister, saying that 32 Sri Lankans have joined the ISIS in Syria.

There are various radical Islamic groups in Indonesia, including those which support the ISIS. 

The government continues to deny that there is a threat by radical Islamic groups to the country.