CAIRO — Police are clashing for a third day in Cairo's central Tahrir Square with stone-throwing protesters demanding the country's military rulers quickly transfer power to a civilian government.

About 3,000 protesters are on the square, facing off with hundreds of black-clad riot police firing tear gas and rubber bullets.

Monday's clashes are also taking place near the Interior Ministry, which is close to Tahrir Square — the epicenter of the uprising that toppled President Hosni Mubarak in February.

The protests have spread across much of Egypt. At least 13 protesters have been killed since Saturday, all but one are in Cairo. Hundreds have been wounded.

The military has floated a timetable that places the transfer of power sometime late in 2012 or early 2013.