The AP reports that 27-year-old blogger Kevin Cogill was arrested in Los Angeles and held for “violating US copyright laws” for streaming parts of the 14 year delayed Guns N’ Roses album Chinese Democracy.

According to an arrest affidavit, Cogill admitted to agents that he posted the songs on his Web site. Prosecutors said Wednesday the leak could result in a “significant” financial loss for the band.

Cogill will not face any special Internet restrictions, but was ordered to appear in court for a preliminary hearing on Sept. 17.

Cogill’s girlfriend was in court for his appearance and afterward said, “Rally the troops,” but declined further comment.

Rally the troops, indeed.

Update: Kevin Cogill’s website is Antiquiet; the AP apparently doesn’t want to give him traffic.

Update #2: GNR leaker creates defense fund.

Update #3: The Smoking Gun has the FBI affidavit.