Egyptian police stormed Cairo’s Tahrir Square late Tuesday to disperse stone-throwing protesters, killing at least one person.

Egyptian police stormed Cairo's Tahrir Square late Tuesday to disperse stone-throwing protesters, killing at least one person.

A health ministry official said police backed by armored vehicles fired tear gas and shots after clashes in the square to scatter protesters who had gathered to mark the anniversary of deadly 2011 demonstrations.

One man was killed when he was struck by birdshot during the clashes, head of emergency services Ahmad al-Ansary told AFP. It was not immediately clear if he was a protester.

The crowds were marking the anniversary of 2011 protests against the military, which took power between president Hosni Mubarak's overthrow and his now deposed successor Mohammad Mursi's election in June 2012.

Egypt is divided between Mursi's supporters and those of the military that overthrew him, but Tuesday's protesters accused both sides of betraying the goals of a 2011 uprising that ousted president Hosni Mubarak.