The Muslim Brotherhood condemns in the strongest possible terms this example of terrorists' cynical and callous disregard for human life. It stresses that nothing justifies terrorism, which is aggression against Islamic values which forbids any act of violence and does so without distinction of language, culture or religion.
It calls on the authorities to step up and assume its responsibilities in providing the necessary security around all sites of worship and premises and demands those responsible for this heinous crime be immediately brought to justice.
http://www.islamopediaonline.org/news/muslim-brotherhood-condemns-attacks-against-coptic-christians-egypt