Ousted president Mohamed Morsi made mistakes but he should have been given time to correct them, a former government minister has said.

Bassem Ouda, a leading member of the Muslim Brotherhood and former supply minister in Hisham Qandil's cabinet, made the comments during an interview on Turkey's TRT Arabic satellite channel on Thursday.

"I would like to send a message to those who were calling for a referendum to see if Morsi should continue – how can we have a referendum on the president if there is no state or parliament?"

Ouda added, "The Muslim Brotherhood was criticised for excluding other political groups from power, but Hazem El-Beblawi's cabinet excludes the entire Islamist current that represents 70 percent of the Egyptian people."

Army chief Abdel-Fattah El-Sisi claimed nobody would be excluded from the political system, Ouda said, but Saad El-Katatni, the leader of the Brotherhood's Freedom and Justice Party, was later arrested and the party's offices closed.

El-Sisi must reinstate the suspended constitution, Ouda added.

The recent wave of attacks by militants in the Sinai Peninsula is taking place because local tribes support Mohamed Morsi, Ouda concluded.