Ousted Egyptian president Mohamed Morsi said the country will not see stability until the coup that drove him from power is reversed and those responsible are held accountable.
In a letter read by one of his lawyers Wednesday, Morsi praised his supporters for protesting his July ouster and accused Egypt's military leader General Abdel Fatah el-Sissi of treason.
The lawyer said Morsi's team is considering filing a lawsuit to ask a court to annul the general's actions.
Morsi is being held awaiting the January 8 resumption of his trial on charges of inciting murder and violence during clashes outside the presidential palace last December.
The trial opened last week, but the initial session lasted just minutes after Morsi and his co-defendants began chanting in protest. He rejected the proceedings, insisting that he is Egypt's legitimate president and that coup leaders should be tried instead of him.
If convicted, Morsi could face the death penalty.
Egypt's army removed him from power on July 3 following protests by the opposition who accused him of trying to monopolize power and failing to fix the country's economy.
Since then, Egyptian authorities have cracked down on the Muslim Brotherhood, arresting much of the group's top leadership and clashing with those demonstrating against the interim government. More than 1,000 people, mostly Islamists, have been killed in the fighting.
The Islamist Muslim Brotherhood has continually demanded that Morsi be reinstated as president.