The supreme leader of Egypt's Muslim Brotherhood has been arrested on charges of "inciting the murder of protesters".
The development comes as authorities continue a crackdown on the Brotherhood, the party of ousted president Mohamed Morsi, which has sparked deadly protests and international condemnation.
Mohammed Badie was arrested in an apartment near Rabaa al Adawiya square, where hundreds of Morsi supporters were killed last Wednesday as police cleared their protest camp.
Senior members of the Muslim Brotherhood organisation, including Mr Badie, are wanted for questioning, accused of inciting the deaths of protesters.
The arrest comes days after his son was killed.
Diana Eltahawy, Amnesty International researcher, Cairo spoke to Newstalk's Breakfast this morning:
Brotherhood clampdown
Egypt's interior ministry has said it has arrested more than 1,000 Muslim Brotherhood "elements" during the unrest.
Mohammed Morsi was deposed by the military on July 3 in what his supporters call a coup.
His opponents say the military had no choice but to intervene after the start of another popular uprising like the one that overthrew president Hosni Mubarak in 2011.
Mubarak's lawyer said on Monday that he expects the deposed dictator to be freed from jail after being cleared of corruption charges.
According to his Fareed El Deeb, judicial authorities have ordered that Mubarak (85) should be released on one of the remaining corruption charges against him.
The development came after Egyptian authorities disclosed that suspected militants had attacked two police minibuses with rocket-propelled grenades, killing 24 officers in Sinai.
Sinai has been witnessing near daily attacks by suspected militants since July 3.
Halawas missing
Meanwhile, Irish Diplomats still haven't managed to locate the four Irish siblings who were detained after security forces stormed a mosque in Cairo at the weekend.
The envoys visited Tora prison and several other facilities on the outskirts of the city, in an unsuccessful attempt to locate the three sisters who are in their twenties, and their teenage brother.
A Turkish diplomat is reported to have met the four Irish citizens on Sunday.
The four are children of Hussein Halawa, the Imam at Ireland's largest mosque in Dublin.
Meanwhile, EU foreign ministers will meet to discuss their response to the escalating crisis in Egypt tomorrow.