(All times are local in Egypt, GMT+2)
7:53pm: Leader of opposition Karama movement tells Al Jazeera he believes "the military approached Mubarak and told him it was time to go".
7:50pm: More on that concern of the Muslim Brotherhood. " It looks like a military coup," said the Brotherhood's Essam al-Erian. "I feel worry and anxiety. The problem is not with the president, it is with the regime."
7:48pm: Al Jazeera's Tristan Redman reports people around him in Tahrir Square are "dancing in the streets".
7:44pm: "If General Sulieman or the military take over, that is of great concern to everyone," says Al Jazeera's Ayman Mohyeldin. "While the military is very much respected, people here want to see a transition from military rule to civilian rule." The past four leaders of Egypt have had a military background.
7:19pm: A senior member of the Muslim Brotherhood reports concern the military is seizing power. Meanwhile, a US State department briefing has been postponed until a time "to be determined".
7:12pm Al Jazeera's Rawya Rageh, reports that people around her in Tahrir Square have a strong sense of anticipation - people believe their moment has come.
7:02pm Robert Gibbs, White House spokesman, says: "The president is watching the same thing you are. I don't know what the outcome will be."
6:54pm Watch Al Jazeera live for the latest news - click here: http://aje.me/ajelive
6:49pm: Alan Fisher, Al Jazeera correspondent, notes the military's Supreme Council has only ever held three open sessions in its history. 1967, 1973 - and today.
6:44pm: Al Jazeera's Sherine Tadros reports the military presence in downtown Cairo has increased in recent hours, with greater numbers of tanks making a highly visible presence.
6:37pm: White House says situation in Egypt is 'fluid'.
6:36pm: State TV reports Mubarak will address the country tonight.
6:23pm: Egypt's prime minister says Mubarak "is still president, and no decisions taken has changed that".
