[1/5] A demonstrator holds placards as he demands the release of Egyptian-British hunger striker Alaa Abd el-Fattah near the British Embassy in Beirut, Lebanon November 7, 2022.
U.N. High Commissioner for Human Rights Volker Turk called for the immediate release of Abd el-Fattah who he said was "in great danger."
Egyptian officials have not responded to Reuters requests for comment on Abd el-Fattah.
Abd el-Fattah rose to prominence during Egypt's 2011 popular uprising which led to Egypt's first democratic presidential election.
Abd el-Fattah, a software developer from an activist family, was detained in the subsequent crackdown on Islamists, leftists and liberals alike, and has been behind bars for most of the time since then.