An international journalism advocacy group says Ethiopia has detained two more journalists, bringing the number of journalists being held by the government to 12.

The New York-based Committee to Protect Journalists says the journalists were arrested as security forces raided offices shared by three publications in Addis Ababa November 22. Computers and documents were also seized from the offices of a Ethiopian journalists group last week.

CPJ officials say the crackdown on journalists began earlier this month following political unrest which left at least 46 people dead.

Prime Minister Meles Zenawi has said a group of detained opposition leaders and journalists are to face treason charges for their alleged role in the violence during anti-government protests against alleged fraud in May parliamentary elections.