Egyptian authorities have arrested supreme guide of the Muslim Brotherhood organization, Mohammad Badee, the official Middle East News Agency said on Tuesday. Badee was detained at an apartment building in Nasr City in eastern Cairo, upon tip-off to the security apparatuses, MENA said. It also indicated at detention of Hassan Malek, a leading member of the group. Meanwhile, the interim presidency declared official three days of mourning for death of soldiers who were shot in North Sinai.