Reporters sans Frontières, 5 Feb 2013, via allAfrica.com: "Reporters Without Borders deplores the Eritrean government's censorship of the Qatari TV news network Al Jazeera since 1 February. According to the Qatar-based newspaper Al-Sharq, the Eritrean authorities were annoyed with Al Jazeera for carrying reports about demonstrations by Eritrean exiles outside Eritrean diplomatic missions in Cairo, London, Frankfurt, Rome, Stockholm and other capitals in opposition to the government and in support of the soldiers who stormed the information ministry in Asmara during a brief mutiny on 21 January. The information ministry issued a decree on 1 February forbidding anyone in Eritrea to provide access to Al Jazeera. Public places such as restaurants, cafés and hotels were specifically targeted. To ensure compliance, Al Jazeera's English-language channels were jammed."
-- RSF does not specify how Eritrean authorities jammed AJE.