Deposed Egyptian President Mohamed Morsi will face trial on charges of insulting the judiciary, the state news agency reports, a signal that authorities have no intention of easing a crackdown on his Muslim Brotherhood.

This is the fourth court case to face Morsi since he was ousted by the army in July after mass protests against his one-year rule.

Morsi and 24 other politicians, media personalities, activists and lawyers will be tried on charges of insulting the judiciary, the state news agency said on Sunday.

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The former president is due to appear in court on January 28 over a mass jail break in 2011.

He also faces charges in connection with the killing of protesters and collaborating with the Palestinian Hamas movement and Lebanese Hezbollah to carry out a terrorist conspiracy against Egypt.

The new trial dates back to Morsi's time in office, when he named a judge in a public speech and accused him of overseeing fraud in previous elections.

Egypt has been stepping up pressure on the Brotherhood, which it has labelled a terrorist organisation. It has arrested thousands of its leaders on accusations of violence.

The Brotherhood, once Egypt's best-organised political and religious movement, denies any links to violence and accuses the army of staging a military coup.

Egypt's interim government is trying to push through a political plan that would lead to presidential and parliamentary elections this year, with army chief General Abdel Fattah el-Sisi seen as a likely candidate.

On Saturday, Egyptians passed a new constitution by a majority of 98.1 percent in a referendum boycotted by the Brotherhood.

Source: Agencies