At least 73 people have been killed and 1,000 injured after a football pitch invasion in Egypt, according to officials.
Clashes are said to have broken out as fans flooded the field seconds after the game in the northern coastal city of Port Said finished. Some reports say the death toll is as high as 73.
There are reports of rocks, bottles, flares and fireworks being thrown.
Fans of the home team, Al Masry, swarmed the field after a rare 3-1 win against Al Ahly, Egypt's top team.
It is being described as the worst disaster in the History
of Egyptian football.
Khalil Fahmy, Sky News
Arabia correspondent, said police had been heavily criticised for doing nothing to intervene at the ground.
Egypt's top team, Al Ahly, were playing in Port Said
He said: "Many people were crying for help, for police or army intervention. They spent almost an hour without any army or police protection - this resulted in the bad injuries of hundreds of people.
"Most of the dead were killed by head injuries."
As details of the violence emerged, a football match in Cairo, 200km (125 miles) away, was called off in mourning and television footage showed sections of the stadium on fire. An announcer said the blazes had been started by fans angry over the cancellation.
Some players in Port Said were taken to a locker room for protection, reports said.
Military helicopters have reportedly been sent in on an emergency evacuation to pull Al Ahly fans and players out of the confrontation amid fears they face attack.
A Port Said medic said some of the dead were security officers.
The country's football federation has now "indefinitely delayed" all premier league matches, the state prosecutor has called for an investigation and the country's parliament is to convene for an emergency meeting on Thursday.
There are suggestions of a political dimension to the incident, with Egyptian Islamists blaming supporters of Hosni Mubarak - who was ousted as president in Egypt revolution a year ago - for provoking the violence.http://news.sky.com/home/world-news/article/16161259