Four people are known to have died in overnight clashes between anti-government demonstrators and police in Mansoura in northern Egypt.
Forty other people received injuries.
The demonstrators were hurling rocks and Molotov cocktails at the building of the city government. Police tried to beat off the assault with tear gas.
Northern Egyptian cities including Mansoura and Port Said are into a sixth day of mass protests against the government.
Egyptian protesters stormed a police building in the city of Mansura on Saturday, amid renewed clashes after a demonstrator’s death overnight, the official MENA news agency reported.
They attacked a building that formerly housed the now-relocated regional police headquarters, but where police still have offices.
Dozens of people were injured in the cities of Mansoura and Port Said on Saturday.
Earlier in the day, around 500 protesters threw stones and petrol bombs at the Port Said station, setting it on fire. The interior ministry says protesters then blocked fire engines from reaching the blaze. Five protesters were hit by a police car while blocking traffic, according to AP.
M.D