 Complete the following phrase:  The first away match for El Ahly after Kareekas death was on 1 February 2012 against Masry of Portsaid, on that day and after the whistle was blown, thousands of Masry supporters led by the rivals Ultras Green Eagles broke through the stadium. With the help of security forces, Masry supporters entered El Ahly fans territory and assaulted them, leading to the death of 72 members of Ultras Ahlawy and Ultras Devils members in what was later known as the 