Authorities in Egypt are concerned that riots may break out in Tahrir Square after the Friday prayers. 

A group known as the “Egyptian Revolutionary Coalition” published a call Thursday to Egyptians to rally en masse at Tahrir Square in order “to express anger at the continued deterioration of the economic situation and the social exploitation, as well as the limitation of freedoms and the threat to a free press.”

Egypt, they said, needs “to move quickly possible past the transitional phase, which has become a phase of revenge against the revolution and revolutionaries.”

Today (Thursday), October 6, is the 30th anniversary of the murder of Anwar Sadat, and the ascent of Hosni Mubarak to power. The assassination was carried out during a military parade that marked the anniversary of the crossing of the Suez Canal in the Yom Kippur War, on October 6, 1973.