Hundreds of protesters in Egypt's second largest city, Alexandria, blocked roads and tramways around one of the main squares in the city.
Scuffles broke out between tram drivers and a number of protester blocking the route, according to local media.
A crowd of people are chanting in Egypt's Tahrir Square ahead of expected demonstrations marking the second anniversary of the uprising that toppled President Hosni Mubarak.
Watch: Riot police setting fire to tents in Tahrir Square
Riot police have been trying to clear anti-government demonstrators from Tahrir Square in the Egyptian capital Cairo overnight.
The police could be seen setting fire to makeshift tents in the square and beating up at least one protester.
Demonstrations are expected today marking the second anniversary of the uprising that toppled President Hosni Mubarak.