Crowds are beginning to gather in Tahrir Square to protest against President Mursi's new powers. State television showed a number of protests outside mosques across the city.
Supporters of the president have been staging counter protests, but there are no reports of clashes.
More top news
A British Tamil cricketer has died after being hit in the chest by a ball.
A mix of sunshine and frequent showers is in store for the rest of today.
Dozens of plots have been thwarted since July 7, 2005, but are we any less vulnerable to terror attacks?