The Muslim Brotherhood is ready to take part in talks on Egypt's political crisis as long as the talks are mediated by Al-Azhar, Egypt’s top Islamic authority. Muslim Brotherhood spokesman Gehad El-Haddad said Tuesday that talks must be based on the “restoration of constitutional legitimacy” in stead of initiatives offered by Ahmed el-Tayeb, an Al-Azhar member who has supported the army's overthrow of civilian President Mohamed Morsi. Morsi supporters have continued to pressure Egypt’s interim leaders by marching to the Interior Ministry building in central Cairo. Clashes have erupted between the demonstrators and the supporters of the army-backed government, who have pelted them with stones and bottles, forcing the police to use teargas to break them up.