<br/><br/>'At least 21 people have been killed and dozens more injured in an explosion at a church in northern Egypt. <br/>State media say, the blast targeted St George's Coptic church in the city of Tanta in the Nile Delta. <br/>The cause of the explosion is not yet known, but Egypt's Christian minority has often been targeted by Islamist militants in recent years. <br/>It was timed for maximum impact, as people gathered to mark Palm Sunday. Egyptian security forces had been put on alert in anticipation of such an attack. <br/>Provincial Governor Ahmad Deif told the state-run Nile channel that either a bomb was planted or someone blew himself up. A search is under way for any more explosives which could be in the vicinity.<br/>

<br/><br/>'At least 21 people have been killed and dozens more injured in an explosion at a church in northern Egypt. <br/>State media say, the blast targeted St George's Coptic church in the city of Tanta in the Nile Delta. <br/>The cause of the explosion is not yet known, but Egypt's Christian minority has often been targeted by Islamist militants in recent years. <br/>It was timed for maximum impact, as people gathered to mark Palm Sunday. Egyptian security forces had been put on alert in anticipation of such an attack. <br/>Provincial Governor Ahmad Deif told the state-run Nile channel that either a bomb was planted or someone blew himself up. A search is under way for any more explosives which could be in the vicinity.<br/>