Authorities in the Amhara region said more than 4,000 people had been detained in an anti-crime operation but press watchdogs and rights groups reported that journalists had also been targeted.
Police also raided Temesgen's house on Thursday and seized magazines, disk drives and a camera, he added. The arrests come after the Nisir International Broadcasting Corporation and Ashara, both covering Ethiopian affairs on their YouTube channels said their studios in Amhara were raided last week and staff taken away, some to undisclosed locations.
The Committee to Protect Journalists and Reporters Without Borders this week called for the immediate release of the journalists and urged the Ethiopian authorities to stop harassing the press.