FIFA said in a statement: "FIFA has asked the Egyptian authorities for a full report on the incidents in order to evaluate what happened,Demaryius Thomas Broncos Jersey."
Al Masry fans invaded the pitch after a surprise 3-1 win over Cairo club Al-Ahly in Port Said and protests began yesterday after claims that security forces and police did not do enough to intervene,Morris Claiborne Jersey, and that the violence was tied up with the political power struggle in the country.
Home fans reportedly armed with sticks and knives stormed the field after the final whistle.
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Meanwhile, the Egyptian government was reported to have sacked senior officials in Port Said and the Egyptian football association,Brian Cushing Jersey.
Security forces fired tear gas as thousands of protesters marched towards the interior ministry in Cairo yesterday,Jason Pierre-Paul Jersey.
Al-Ahly's Portuguese coach Manuel Jose has returned to Portugal to ponder his future after being attacked, while his assistant coach Pedro Barny backed up the claims that security staff did too little.
Fresh trouble broke out in Egypt on Thursday as thousands protested against the violence that saw 74 people killed at a match in Port Said.
"I await further news from you concerning the circumstances of this tragedy."
Reports suggest some Al-Ahly fans suffocated, trapped in a narrow corridor as they fled the violence,Trent Cole Jersey.
FIFA have demanded a full report into the violence at the match on Wednesday night that left more than 70 people dead,Antonio Brown Steelers Jersey.
In a letter to Egyptian FA president Samir Zaher, FIFA president Blatter offered support and said: "Today is a black day for football and we must take steps to ensure that such a catastrophe never happens again.
"Football is a force for good and we must not allow it to be abused by those who mean evil.