Another night of unrest on Egypt’s streets has left six people dead in Cairo and Suez.
Firefighters were slow to tackle the blaze when the headquarters of the tax authorities in the capital was set on fire.
The movement against the country’s military rulers is gaining momentum, since 74 people were killed at a football match on Wednesday.
Suspicion that the killings were allowed to take place because the fans had been involved in last year’s revolution was the spark that reignited dissatisfaction with the military rulers that had mainly been confined to peaceful protests.
Though the dead football fans supported a Cairo team, the violence has spread across the country.
Thousands of protesters clashed with police, throwing Molotov cocktails and rocks and setting tyres on fire in the Sumoha neighbourhood of Alexandria.
An emergency parliamentary session was held on Thursday. Several senior officials have been sacked and Field Marshal Tantawi, chief of Egypt’s military council, has vowed to catch those responsible for the killings.