Prominent Egyptian journalist Abdenasser Salama has been detained on terrorism charges after calling for President Abdel Fattah Al-Sisi to resign, local media report.
Mr Salama, a former editor-in-chief of the state-owned Al Ahram daily newspaper, wrote a long post on Facebook accusing the president of “his failure to deal with the Ethiopia dam crisis”.
Egypt opposes the Grand Ethiopian Renaissance Dam saying it threatens its water security, but it has so far failed to halt or get a favourable agreement with Ethiopia.
Mr Salama was arrested on Sunday and charged with “financing terrorism” and joining “an illegal organisation”.
Rights groups accuse the Egyptian government of relentless attacks on journalists who criticise Mr Sisi.