A bomb exploded in a Christian port town north of the Lebanese capital on Friday, killing one Sri Lankan woman, wounding six people and damaging shops and houses, a security source said. The explosion, the fifth to target the country's Christian heartland in two months, came on the eve of the return of anti-Syrian opposition leader Michel Aoun to Lebanon from 15 years of exile. The source said the bomb was placed inside an old abandoned house in the port city of Jounieh, causing a small fire and shattering windows of nearby buildings. The blast was also near an abandoned church and a radio station. Four bombs have killed three people and wounded around 40 in Christian areas since the February 14 assassination of former Prime Minister Rafik Al Hariri. Lebanese elections are set for May 29 and, in a significant move since Syria ended its 29-year military presence, a court this week suspended an arrest warrant for Maronite Christian Aoun, paving the way for his return on Saturday.