The Egyptian constitution - which could pave the way for army chief General Abdel Fattah al-Sisi to announce his candidacy for president - was approved by 98.1% of voters, according to the Electoral Commission.
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A woman hit by police gunfire during a counter-terrorism operation has been arrested after being released from hospital.
Police have been granted extra time to question a man who is being held on suspicion of planning a terror attack.
The man opened fire at the house, shattering the front door and window.