Military police burned medical supplies and detained a number of doctors at the field hospital at Omar Makram Mosque on Saturday, Ahmed Hussein, a board member of Egypt's Doctors Syndicate, told Al-Badeel newspaper.
Hussein added that three injured people, Mohamed Mahmoud Hanafy, Mohamed Abou Soud, and Tamer Ismail, who left the hospital to seek x-ray examinations, have disappeared.
The Omar Makram Mosque is located in Cairo's Tahrir Square.
The Tahrir Doctors Organization published a statement on its Facebook page saying that 15 doctors and nine injured people, some in serious condition, are being held inside the Omar Makram Mosque. The statement added that military police threatened to arrest doctors if they attempted to leave.
Several doctors have been arrested by military and intelligence members in other field hospitals in mosques and churches, the statement added.
The Tahrir Doctors Organization said that those responsible for this situation are the military, political forces, and everyone else who could have acted quickly to save people's lives and secure paramedics and doctors in the field.
Violence has continued for a second day in Cairo after members of the police and army clashed with protesters staging a sit-in outside the cabinet building in the early hours of Friday morning. At least 8 people have died and hundreds have been injured, according to the Ministry of Health.