Egyptians torched a police post in the eastern city of Suez early on Thursday morning over the killing of protesters in anti-government demonstrations earlier in the week, a Reuters witness said.
Protesters in Suez had on Wednesday set a government building and another police post on fire, as well as trying to burn down a local office of Egypt's ruling party. Those fires were all put out before they engulfed the buildings.
The Reuters witness said police fled the post that was burned on Thursday before the protesters hurled petrol bombs.
Dozens more protesters gathered in front of the second police post later on Thursday morning demanding the release of their relatives who were detained in protests.
Demonstrations demanding the resignation of President Hosni Mubarak, in power since 1981, have raged since Tuesday across several cities, including Cairo and Suez. Officials say hundreds of people have been arrested.
All three protesters killed in demonstrations to date were in Suez. A policeman was killed in Cairo.