An Egyptian security official says a girl has been killed and her mother wounded by the explosion of a homemade bomb on the outskirts of Cairo.
The official said assailants placed the explosive in a building under construction in 6 October district today.
The explosion wounded the girl's mother, who is the wife of the building's guard.
The official spoke on condition of anonymity because he was not authorised to brief reporters.
Egypt has seen a series of attacks mainly targeting security forces since the ouster of Islamist President Mohammed Morsi last July.
