No women or children were killed during clashes between the army and pro-Morsi protesters at the Republican Guard headquarters on Monday morning, Egypt's Health Insurance Authority head Abdel-Rahman El-Sakka has said.
The clashes left at least 42 civilians dead and 322 injured.
Supporters of former president Mohamed Morsi have been camped out at the Republican Guard headquarters since his ouster Wednesday, believing Morsi is being held inside.
Contrary to reports circulated by some Morsi supporters, of the 270 injured and dead received by the nearby Health Insurance Authority's hospital, none were women or children.
The Muslim Brotherhood, the group from which Morsi hails, insists he remains president despite the military intervention that deposed him following protests by millions of Egyptians calling for early presidential elections.
The group has vowed to continue demonstrating peacefully against what they describe as a military coup.
Armed clashes have nevertheless broken out between Morsi's supporters and opponents, leading to tens of deaths in recent days.