"The decision to extend the detention of 665 people arrested in Rabaa came last night," his lawyer Mostafa Attiya told AFP.
On Tuesday, a source at the state prosecutor's office said those arrested in the Rabaa al-Adawiya protest camp faced several accusations including possession of weapons and opening fire on police, killing five officers.
Abdallah, Al-Jazeera Arabic's West Africa reporter, had been stationed at the Rabaa al-Adawiya camp since July 4, a day after the military overthrew Islamist president Mohamed Morsi, his brother Mosaab said.
Police started a crackdown on the Qatar-based satellite broadcaster's Egyptian affiliate, Al-Jazeera Mubasher Misr, almost immediately after Morsi's overthrow, by raiding its offices and seizing its equipment.
A Cairo court ordered the closure of Al-Jazeera Mubasher Misr earlier this month, along with three Islamist channels.
Egyptian authorities and local media have accused Al-Jazeera of biased reporting of the popularly backed coup that toppled Morsi.
The decision came two days after Egypt expelled three foreign journalists working as freelancers for Al-Jazeera's English-language channel after police had held them for several days.
Al-Jazeera said it was submitting complaints to international courts against Egyptian authorities for detaining its journalists.
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On Tuesday, a source at the state prosecutor's office said those arrested in the Rabaa al-Adawiya protest camp faced several accusations including possession of weapons and opening fire on police, killing five officers.
Abdallah, Al-Jazeera Arabic's West Africa reporter, had been stationed at the Rabaa al-Adawiya camp since July 4, a day after the military overthrew Islamist president Mohamed Morsi, his brother Mosaab said.
Police started a crackdown on the Qatar-based satellite broadcaster's Egyptian affiliate, Al-Jazeera Mubasher Misr, almost immediately after Morsi's overthrow, by raiding its offices and seizing its equipment.
A Cairo court ordered the closure of Al-Jazeera Mubasher Misr earlier this month, along with three Islamist channels.
Egyptian authorities and local media have accused Al-Jazeera of biased reporting of the popularly backed coup that toppled Morsi.
The decision came two days after Egypt expelled three foreign journalists working as freelancers for Al-Jazeera's English-language channel after police had held them for several days.
Al-Jazeera said it was submitting complaints to international courts against Egyptian authorities for detaining its journalists.
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