Police have fired tear gas in clashes with tens of thousands of protesters gathered near the presidential palace in the Egyptian capital Cairo.
Some of the protesters reportedly cut through barbed wire around the palace.
Crowds have been gathering to protest against what they say is the rushed drafting of a new constitution and the decision by President Mohammed Morsi to extend his powers.
Mr Morsi was in the palace but left as the crowds grew, sources there said.
Ace calls Morsi Obama’s “bestest pal”:
Remember when Obama offered some shoot-from-the-lip demands that “Mubarak must go,” and quickly too?
I don’t see him calling for the ouster of the Muslim Brotherhood tyrant. He seems to like Morsi. I wonder what accounts for the difference in treatment between Mubarak and Morsi. Besides the fact that one was pro-American and secular and the other anti-American and Islamist.