Tunisian authorities have arrested an Al Jazeera reporter, the network’s bureau chief said Thursday, as campaigners voiced concern over the growing number of journalists behind bars in the North African country. “Samir Sassi, a journalist at the Al Jazeera office in Tunisia, was arrested after security forces raided his house” late Wednesday, said Lotfi Hajji, director of the pan-Arab television network’s bureau in Tunis. اعتقال الزميل سمير ساسي الصحفي بمكتب #الجزيرة ب #تونس بعد مداهمة منزله من قبل قوات الأمن، وتفتيشه وحجز الكومبيوتر الخاص به وهاتفه وهواتف زوجته وابنائه.. ولم تفصح قوات الأمن ل…