A Cairo court renewed the detention of Doctors Syndicate member Taher Mokhtar and two of his roommates for 45 days pending investigations on Sunday, according to a statement by the Voices Behind Bars campaign.
The court has repeatedly renewed the detention of Mokhtar, Hossam El-Din Hamed (Sam) and Ahmed Hassan (Estakoza), since they were arrested on 14 January at their apartment in downtown Cairo.
They are accused of carrying posters inciting to protest and to "overthrow the regime."
However, Mokhtar's lawyer says his client only carried union documents on the medical condition of jailed doctors.
Mokhtar is an activist for the provision of medical healthcare for prisoners and is a member of a campaign called "Medical negligence in prisons is a crime." He is also a member of the Doctors Syndicate freedom committee.
The Voices Behind Bars campaign documents stories of prisoners in cases related to freedom of expression.
The joint campaign involves a number of human rights organisations including the Egyptian Centre for Economic and Social Rights, Nazra for Feminist Studies, the Egyptian Initiative for Personal Rights, and the Association of Freedom of Thought and Expression.