Tahrir was the focal point of Egypt's revolution but has more recently been the scene of violence between supporters and opponents of President Mursi.
Later on Sunday the retrial date for the man ousted in the revolution, former president Hosni Mubarak, was announced as being set for April 13. He is appealing against his life sentence.
Elsewhere in Cairo, US Secretary of State John Kerry held talks with President Mohamed Mursi in which America pledged funds ‘in good faith' that Egypt will complete a deal with the IMF to secure a much-needed loan.
And there was more violence in the Suez Canal city of Port Said. At least 250 people were injured as protesters fought police as they were trying to move prisoners accused of taking part in last year's deadly football riot in the city.
Source: Euronews
