Egypt's security forces arrested on Saturday evening Muslim Brotherhood leader Mohey Hamed after he was found at an apartment in the eastern Cairo district of Nasr City.
Hamed was transferred to Tora Prison, south of Cairo, following his arrest.
Tora Prison holds several leaders of the Muslim Brotherhood who were detained following a police crackdown on the Islamist group, whom the interim government has accused of committing "terrorist acts" against its opponents.
Hamed is a member of the Brotherhood Guidance Bureau, the highest authority in the 85-year-old group's hierarchy.
On 14 August, police forces forcibly dispersed pro-Morsi sit-ins in Cairo and Giza sparking deadly violence in Egypt that left hundreds dead and over a thousand injured.
Egypt's army chief Abdel Fattah El-Sisi deposed elected president Mohamed Morsi, who hails from the Islamist group, on 3 July amid mass protests against him.