Iran's official news agency says the president's press adviser has returned to prison after being on a four-day medical leave granted by judicial authorities.
The report on December 24 by IRNA says Ali Akbar Javanfekr returned to Tehran's Evin Prison to continue serving a six-month sentence on charges of "publishing material contrary to Islamic norms" and insulting Iran's Supreme Leader Ayatollah Ali Khamenei.
The charges are thought to be linked to President Mahmud Ahmadinejad's political battles with Khamenei.
An Iranian court convicted Javanfekr in 2011 and banned him from journalistic activities for three years.
Based on reporting by AP and IRNA