Egyptian football fans rush to the field during clashes that erupted after a match between Egypt's al-Ahly and Al-Masri teams in Port Said on February 1, 2012.
At least 74 people have died and hundreds more received injuries when riots broke out after an Egyptian Premier League match in the Port Said city in the north of the country.
The clashes erupted on Wednesday immediately after the referee blew the final whistle, ending a game that saw the football team al-Masri beat al-Ahly 3-0 in the city.
According to security officials, fans of the winning team flooded the field, and attacked the players and fans of their opponents. There are reports that rocks, bottles and fireworks were thrown onto the field.
The two football teams have a long history of bad blood and many clashes have erupted between the two sides' fans in recent years.
The Muslim Brotherhood, Egypt's largest political group, has denounced the clashes, accusing the supporters of ousted dictator Hosni Mubarak of sparking the deadly violence.
"The events in Port Said are planned and are a message from the remnants of the former regime," said Egyptian legislator, Essam al-Erian, in a statement on the website of the Freedom and Justice Party, the Brotherhood's political wing.
“This tragedy is the result of negligence and the lack of army and police, and those running the country bear the responsibility," he added.
The regime of Mubarak toppled in February following weeks of anti-government protests in Egypt that put an end to his three-decade rule.
According to the UK-based right group Amnesty International, nearly 850 protesters were killed during the historic revolution in the North African country.