Thousands of protesters take to the streets of downtown Cairo to vent their anger after the detention of prominent activist and blogger Alaa Abd El-Fattah.

Abd El-Fattah was brought before military prosecutors on Monday but refused to answer their questions, on the basis that the military have no legitimate right to interrogate civilians.

The thousands of demonstrators marched from Talaat Harb Square to the Appeals Prison in the Cairo district of Bab El-Khalq, where Abd el-Fatah is being detained.

Protesters chanted against military trials for civilians and for an end to the military rule that has taken hold of Egypt since the ousting of Mubarak in February.

Video by Simon Hanna.