Authorities deployed extra security forces in Cairo streets and near key state institutions and police were ordered to “confront with firmness” any violation of the law just hours ahead of the official announcement of Egypt’s highly disputed presidential election results.

Official results from the disputed presidential run-off vote in Egypt will be released on Sunday, the head of the election commission has announced.

Egypt’s election commission has disqualified 10 presidential hopefuls, including Hosni Mubarak’s former spy chief and fundamentalist Islamists, from running.