Egyptian forces have tightened security across the country, arresting four Muslim Brotherhood members in north of the capital, Cairo.

The arrests were made on Saturday when security forces raided the houses of the Brotherhood members in the Kafr el-Sheikh city ahead of the trial of Egypt’s ousted President Mohamed Morsi.

Morsi, who has been held in an unknown location since his overthrow in early July, is due to stand trial on November 4 on charges of inciting violence.

In a statement issued on Thursday, a Muslim Brotherhood-led coalition, known as Anti-Coup Alliance, called for daily demonstrations before Morsi goes on trial.

On Friday, thousands of Morsi supporters marched in Cairo and other major cities, condemning his trial as “void.” They instead described it as a trial “of the people’s will.”

“The charges (against Morsi) are all fabricated,” said one of the protesters.

Egypt has been experiencing violence since July 3, when the army ousted Morsi, suspended the constitution, and dissolved the parliament. It also appointed the head of the Supreme Constitutional Court, Adly Mahmoud Mansour, as the new interim president.

The government of Mansour has launched a bloody crackdown on Morsi supporters and arrested more than 2,000 Brotherhood members, including the party’s leader, Mohamed Badie.