In Egypt , gunmen have killed three policemen and injured eleven others in an attack at Cairo's Al-Azhar University.

The violent incident comes a week before the presidential elections that are widely expected to be won by former army chief Abdel Fattah al-Sisi.

Militants have stepped up attacks on security forces since Sisi toppled President Mohamed Mursi last year.

Hundreds of police and soldiers have been killed in the insurgency against the army-backed government.

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