A bomb has exploded near St. Mark's Cathedral in Cairo, the mother church of the Coptic Orthodox; at least 25 people have been killed and over thirty injured. The bomb actually exploded in an adjunct chapel (the Church of St. Peter and St. Paul), and seems to have been calculated to try to kill as many people as possible as liturgy was ending.
The Cathedral itself is relatively new, but when it was built, they incorporated several churches that were already there, some of which are quite old and in turn incorporate elements of even older churches.
