Officials at the Belal bin Rabah Islamic complex in Moqattam condemned the storming of its mosque during clashes nearby on Friday.
According to an administrative board statement on Monday, Islamists were behind the attack trance amid fierce fighting around the Muslim Brotherhood headquarters.
Gamal Sharaf, a member of the board of directors, told Al-Masry Al-Youm that mosque staff was unable to disperse the crowd on its own.
The board also condemned acts of violence, thuggery and involving places of worship in political conflicts.
Members said the complex was built using donations from Moqattam residents and offers services to those in need.
Earlier, Al-Masry Al-Youm reported that Moqattam residents had been tortured by Islamist factions inside the mosque's event hall.
Around 200 people were injured in the Friday clashes.
Edited translation from Al-Masry Al-Youm
