People gather during a protest at Tahrir Square in Cairo, Egypt, Nov. 20, 2011.?[Xinhua]

The death toll from violence in Cairo over the past three days has risen to 33, officials of Egypt 's Zeinhom Morgue said Monday, quoted by al-Jazeera television.

The report quoted the officials as saying that 33 corpses have been taken to the morgue since clashes between protestors and police at central Cairo's Tahrir Square erupted Friday.

The Egyptian health ministry earlier put the death toll at 22.