Clashes in Cairo continued Wednesday between police and several hundred Egyptian protesters following Tuesday's massive demonstration against Egyptian President Mohamed Morsi.

Police fired tear gas into a mob of stone-throwing protesters on a street near the U.S. Embassy in Cairo. Other Egyptian demonstrators staged a sit-in Wednesday at Tahrir Square, the epicenter of protests during last year's ouster of Mr. Morsi's predecessor, Hosni Mubarak.

Mr. Morsi granted himself new powers in a November 22 decree that bars the judiciary from challenging his decisions.

On Monday, Mr. Morsi promised the Supreme Judicial Council that he will restrict his newly self-granted powers to sovereign matters. But there was no definition of the “sovereign matters” over which President Morsi will have absolute power.

Opposition groups have demanded the cancellation of Mr. Morsi's decree and accuse him of trying to assume dictatorial powers.