Egypt's interior ministry tells police in the Sinai peninsula to raise a state of emergency after obtaining intelligence that jihadists might attack their forces there.
On 25 January 2011 Tahrir Square became the focal point for a public outpouring of anger against the rule of Hosni Mubarak. As violence breaks out in Egypt again, Channel 4 News asks what has changed?
Egypt's ousted former president Hosni Mubarak successfully appeals against a life sentence, allowing him to be retried over the killing of protesters in the 2011 uprising.
While Egyptian President Mohamed Mursi withdraws a decree granting him sweeping powers, opposition politicians say protests will not stop until he abandons plans for a draft constitutional referendum.
Thousands of Egyptians gather in Tahrir Square to support President Mohamed Morsi's decision to replace his defence minister and army chief while ordering several senior generals to retire.
The consequences of the 2011 Arab uprisings are still being felt. Some countries, like Egypt, appear to be moving towards a democratic settlement, while others, like Syria, are mired in civil war.
Ousted Egyptian president Hosni Mubarak is critically ill in hospital, according to military sources in the country.
Despite the controversial dissolution of parliament, voting begins in presidential elections in Egypt. But what does the situation mean for the country's transition process?
Egypt's historic presidential run-off at the weekend has been thrown into chaos after a senior court ruled that parliamentary elections in January were unconstitutional.
Crowds fill Cairo's streets to mark a year since the movement to oust President Hosni Mubarak began. Meanwhile, Egyptian MPs have launched an inquiry into the violent suppression of demonstrations.