JOHANNESBURG (AP) — The Committee to Protect Journalists says it appears Ethiopia is extending and refining its censorship of Internet news with a sophistication that could encourage other authoritarian regimes in Africa.

Prime Minister Meles Zenawi’s government has been blocking major news sites and blog hosts since disputed general election results in 2005 led to violent protests. Voice Over Internet Protocol such as Skype also is blocked, forcing people to use the state telephone system.