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An Al Jazeera web producer reports from Tahrir Square in central Cairo where protesters have gathered, calling on Hosni Mubarak, the Egyptian president, to step down.

The footage is shot on Monday night while the voiced report is from 8:30 local time, on Tuesday morning.

Our reporter says protesters have been undeterred by authorities' attempts to completely block internet access and by rumours that the mobile phone network will also be shut down.

Source: Al Jazeera