By Tom Perry and Maggie Fick, Reuters

Shooting of Morsi protesters deepens Egypt crisis

At least 15 people were killed in Cairo today, medical sources said, when the Muslim Brotherhood said shots were fired at supporters of deposed Egyptian President Mohamed Morsi near the military building where he is being held.

The bloodshed deepened Egypt's political crisis, escalating the struggle between the army, which overthrew Morsi last Wednesday after mass demonstrations demanding his resignation, and the Brotherhood, which has denounced what it called a coup.