Alexandria church bomb: Egypt police on high alert

Hundreds of Egyptian riot police are deployed outside the church in Alexandria where 21 Christians were killed in a New Year's Day bomb attack.

On Sunday, crowds of Christians took to the streets of Alexandria and the capital, Cairo, to denounce the attack.
Several suspects are being questioned over the bombing, which the Egyptian authorities have blamed on foreigners.
The country is on high alert ahead of the Coptic Christmas holiday, which falls on Friday.
Security forces have tightened surveillance at airports and ports to prevent suspects from heading out of Egypt, and set up new checkpoints across the country, press reports said.
Meanwhile, the most senior Muslim cleric in Egypt, Sheikh Ahmed al-Tayeb, has accused Pope Benedict XVI of interfering in Egypt's internal affairs, after he called on world leaders to protect Middle East Christians.
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