I just read this news few minutes ago, and i must say this is the first time i can remember shit like this happened in my country...tho the story only comes up in local newspaper
So i'll just sum it up here, without any less information provided by the newspaper.
A government office staff (31 years old) being an atheist since 2008 is arrested (tho i can say saved) after he was beaten up by a group of people who abruptly came into his office.
He have an online community in regards of Indonesia atheist (since i have no idea about the community, i'm just taking a measurement that its a national community)
He was beaten up in his office related to what he wrote online (tho the newspaper didn't specifically announce what he wrote)
On the other side, Fatwa Chairman of Indonesia Islamic Magistrate spoke that he just heard of this matter and announce that if the person was an moslem, then he must be ask if he really left islam...if he denies it 3 times, then an action must be taken (tho he didn't say what action should be taken, tho many islamic radicals will do as they please in this country.