At least 70 people have been killed in clashes after a football game in the Egyptian city of Port Said, medics say.
Scores of others were injured in Wednesday's violence, including security personnel. At least two players suffered light injuries.
Fans of the winning al-Masry team flooded the field seconds after the match with al-Ahly, Egypt's top team, was over.
A security official said the fans chased the players and cornered their supporters on the field and around the stadium,
throwing stones and bottles at them.
State television quoted Hesham Sheiha, deputy health minister, as saying that most of the injuries were caused by concussion and deep cuts.
Al-Ahly football players were trapped in the changing room along with supporters. Riot police were sent in to drive the rival crowds of fans back.
Thousands of supporters covered the field, as seen in video posted online.
'War, not football'
"This is not football. This is a war and people are dying in front of us. There is no movement and no security and no
ambulances," Abo Treika told the Ahly television channel. "This is a horrible situation and today can never be forgotten."
State television announced that parliament will hold an emergency session over the violence.
Al-Ahly's supporter club, Ultras, said on their website that they were heading to Port Said later in the evening.
Al-Masry team won a rare 3-1 against Al-Ahly.
The two teams have a long history of bad blood, and clashes have erupted in recent years between their fans.
Al Jazeera's Rawya Rageh, reporting from Cairo, said several football games after the revolution have witnessed violence due to the absence of police forces.
"In the security vacuum that has lasted since the revolution, the police force has basically disappeared from the street after their notorious performance during the revolution."
A match in Cairo on Wednesday evening was interrupted following the news of the deaths in Port Said. Television footage showed a big fire behind the supporter stand at the Cairo stadium.
The Premier League which the games were part of was suspended indefinitely.
Scores of others were injured in Wednesday's violence, including security personnel. At least two players suffered light injuries.
Fans of the winning al-Masry team flooded the field seconds after the match with al-Ahly, Egypt's top team, was over.
A security official said the fans chased the players and cornered their supporters on the field and around the stadium,
throwing stones and bottles at them.
State television quoted Hesham Sheiha, deputy health minister, as saying that most of the injuries were caused by concussion and deep cuts.
Al-Ahly football players were trapped in the changing room along with supporters. Riot police were sent in to drive the rival crowds of fans back.
Thousands of supporters covered the field, as seen in video posted online.
'War, not football'
"This is not football. This is a war and people are dying in front of us. There is no movement and no security and no
ambulances," Abo Treika told the Ahly television channel. "This is a horrible situation and today can never be forgotten."
State television announced that parliament will hold an emergency session over the violence.
Al-Ahly's supporter club, Ultras, said on their website that they were heading to Port Said later in the evening.
Al-Masry team won a rare 3-1 against Al-Ahly.
The two teams have a long history of bad blood, and clashes have erupted in recent years between their fans.
Al Jazeera's Rawya Rageh, reporting from Cairo, said several football games after the revolution have witnessed violence due to the absence of police forces.
"In the security vacuum that has lasted since the revolution, the police force has basically disappeared from the street after their notorious performance during the revolution."
A match in Cairo on Wednesday evening was interrupted following the news of the deaths in Port Said. Television footage showed a big fire behind the supporter stand at the Cairo stadium.
The Premier League which the games were part of was suspended indefinitely.