The Building and Development Party, the political wing of Al-Gamaa Al-Islamiya, has called on President Mohamed Morsi to take harsher measures against "rioters."
Violence has been ongoing across the country since the second anniversary of Egypt's revolution on Friday and the death sentence imposed on 21 people on Saturday for their role in the Port Said Stadium disaster. Over 50 people have died so far.
In a statement on Tuesday, the party backed the prosecutor-general's decision to order the arrest of members of Black Bloc, a newly formed group which advocates the use of political violence. The Building and Development Party called for its members to be put on trial.
The party also said "political figures" who allegedly fund the group's "violence and sabotage" must not be forgotten.