The official website of Cairo International Airport was taken over by a group of hackers commemorating the dispersal of the Rabaa sit-in in 2013 for several hours on Friday morning.

The website was attacked by Turkish hacking team "AkinCilar" on the second anniversary of the 2013 police dispersal of two pro-Mohamed Morsi protest camps in Cairo, the larger in Rabaa Al-Adawiya Square and the smaller in Nahda Square, both in greater Cairo.

For several hours, users of the site were redirected to a second page showing the "R4BIA" symbol that has been used by Morsi's supporters to commemorate the dispersal. Messages on the page in Arabic , English and Turkish called the dispersal "a crime against humanity" and vowed not to stop until "attaining vengeance."

The yellow symbol, an image of a hand raising four fingers, represents resistance to, and memory of the dispersal of the sit-ins in 2013. The sign is considered by Egyptian security forces as a symbol of incitement against the army and police.

According to the National Council for Human Rights a total of 632 people were killed during the dispersal, including eight police officers. The dispersal also left 1,492 injured and saw 800 people arrested, according to the report.