Senior officials in Egypt's Muslim Brotherhood have rejected a timetable for new elections laid out by interim president Adly Mansour, BBC News reported

Leading Brotherhood figure Essam al-Erian says the plan for constitutional changes and a vote next year "brings the country back to square one".

President Mohammed Morsi was ousted by the army last week after mass protests.

The decree came hours after at least 51 people were killed at a Cairo barracks where his supporters say he is in held.

The Muslim Brotherhood - Egypt's main Islamist movement, which Morsi belongs to - says its members were fired on at a sit-in for the ousted leader. The army says it responded to an armed provocation.