Egyptian protesters on Monday set fire to two government buildings in the northern city of Port Said, state television reported.
Protesters through petrol bombs at the security and local government buildings in the city, which has witnessed clashes that killed five people and injured more than 560, dpa reported.
Local media reported that crowds chanted slogans against the ruling Muslim Brotherhood group during a funeral procession for two people killed in the violence, which erupted on Sunday over an expected verdict for football fans on trial for deadly riots.
Two policemen were among the dead in recent violence, the Interior Ministry said. They were killed near the security department in the coastal city by gunshots to the head and neck. The identities of the shooters are unknown.
The ministry said that gunmen were randomly attacking police.
In Egypt's second city, Alexandria hardcore football fans blockaded the central bank's branch.
A court is expected on Saturday to hand down rulings for 52 defendants involved in last year's riot in Port Said stadium, which left 74 dead.
In January, a court sentenced 21 people to death in the case. The ruling sparked clashes in the city, leaving some 40 people dead.