Muslim Brotherhood head Mohammed Badie and his deputy Khairat al-Shater are among those whose assets have been frozen, the BBC reported Sunday.
Adel Said, a spokesman and prosecution official of the Freedom and Justice Party, told reporters Saturday that Morsi -- along with 13 senior Brotherhood officials Badie, Mahdy Akef, Essam el-Erian, Safwat Hegazy, Mohamed el-Beltagy and Mahmoud Ghozla -- were being investigated on an array of charges, including spying, killing protesters, inciting to violence and weapons possession, Ahram Online reported Saturday.
Morsi and Brotherhood officials are also facing trial on charges of breaking out of prison during the Jan. 25 Revolution that led to President Hosni Mubarak's ouster.
Morsi was removed from power July 3, days after millions took to the streets demanding his removal.
Unrest has prevailed in the country since then with clashes between Morsi's supporters demanding he be reinstated and those who opposed his regime.
Army chief Abdel Fattah al-Sisi on Sunday defended the decision to remove Morsi from power, and said no group should be barred from politics.
"Every political force ... must realize that an opportunity is available for everyone in political life and no ideological movement is prevented from participating," he said.