Some protesters shut down Tahrir's Mogamma on Saturday to protest the sit-ins blocking Egypt's highest court.
The protesters set up barbed wires at the main entrance of the Mogamaa, Egypt's largest government building, preventing public servants from entering, which led to minor clashes.
Islamist protesters prevented the judges on Sunday from entering the court chanting against it, demanding its dissolution and threatening to stage larger demonstrations, forced the court to adjourn its Sunday session.
Tahrir protesters stressed that they will only open the Mogamaa after resolving the Court's sit in, MENA reported.
Opposition forces continue their sit-in for the 16th day in a row; protesting President Mohamed Mursi's decree which shields his decisions from judicial challenges and the referendum on a draft constitution written by an Islamist-dominated assembly.