The Brotherhood is planning demonstrations for Friday and again Monday when the trial is to begin.
Members are also assuring Morsi supporters he will not be jailed, al-Masry al-Youm reported.
The nine members were arrested at an Oct. 6 meeting, where they were allegedly preparing for attacks against the police and armed forces, the Egyptian newspaper said.
A preliminary investigation indicated Muslim Brotherhood leader Essam al-Erian was instructing the group on the attacks, al-Masry al-Youm said.
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