CAIRO, Dec 5 (Aswat Masriya) - Security forces closed all entrances to Tahrir Square in downtown Cairo on Friday in anticipation of protests against the acquittal of former President Hosni Mubarak.

A group of political and youth movements have called for peaceful protests against the verdict in squares across Egypt, in a what it called a "revolutionary week".

Ten armoured vehicles were deployed at the entrance near of the Egyptian Museum, an eye-witness told Aswat Masriya.

The Cairo Criminal Court dropped on Saturday the case against Mubarak over complicity in the killing of protesters during the 18-day January 2011 uprising which toppled his regime.

The court also acquitted Mubarak's Interior Minister Habib al-Adly and four of his aides on charges of inciting and aiding the killing of 238 protesters. The acquitted aides are; Ahmed Ramzy, Adly Fayed, Hassan Abdel Rahman and Ismail al-Shaer.

The five defendants, alongside other aides Osama al-Marasi and Omar Afifi, were also acquitted of the charge of harming their work-place.

Six political parties of the "Democratic Trend Alliance" also launched on Thursday a petition demanding the trial of Mubarak and his aides.