Hundreds of riot police sealed off the area near the US Embassy in Cairo on Saturday and the interior minister said he would restore calm after four days of clashes between police and Egyptians incensed by a film denigrating the Prophet Mohammad.
A 35-year-old protester was killed and dozens of people were injured in clashes overnight.
The authorities closed the street leading to the embassy where the demonstrators had spent four days throwing rocks and petrol bombs at police.
The area was quieter early on Saturday. A Reuters reporter saw police push several young men into trucks. Two of the men looked bruised and one was stripped down to his underwear.
“Not so rough,” shouted one as he was hustled away.
Police formed cordons on roads into Tahrir Square near the US mission and plain-clothes officers wielding sticks frisked passers-by. The square, the focus of last year’s popular uprising that overthrew President Hosni Mubarak, was strewn with garbage and a torched vehicle was towed away.