Hossein Derakshan arrested?

According to Global Voices Advocacy, the active and highly visible Iranian blogger Hossein Derakshan (aka Hoder) has been arrested in Tehran and “is being investigated on suspicion of espionage for the state of Israel.” No posts on Hoder’s blog since October. Hoder’s been active in shining a light on other similar arrests. GV notes that the arrest hasn’t been confirmed by other news sources.