A bomb exploded in a Christian port town north of the Lebanese capital on Friday, wounding six people, a security source told Reuters. The source said the explosion occurred near old abandoned houses in the port city of Jounieh in the Christian heartland. A series of bombs have exploded in Christian areas since the Feb. 14 assassination of former Prime Minister Rafik al-Hariri, which plunged the country into its worst political crisis since the 1975-1990 civil war. --SP 2312 Local Time 2012 GMT