Beirut  - A bomb exploded Tuesday in a Palestinian refugee camp in south Lebanon, wounding an official of Palestinian President Mahmoud Abbas' Fatah party, Palestinian officials said.

Talal al-Ordoni, was wounded when a bomb exploded near his house in the Ain al-Hilweh camp, east of the southern port city of Sidon, the sources said.

A hospital official inside the camp said Ordoni was in moderate condition, with shrapnel wounds all over his body.

Following the explosion, tension prevailed inside the camp, which 10 days ago witnessed clashes between Fatah members and supporters of the Sunni fundamentalist group Jund al-Sham, in which one Jund al- Sham official was killed.

Jund al-Sham takes its name from the ancient Islamic term of Bilad al-Sham, a region which covers Syria, Lebanon, Jordan, Israel and the Palestinian territories.

Its members are mostly Lebanese, many of whom fought against the Lebanese army during an Islamist rebellion that broke out on New Year's Eve in 1999 in the predominantly Sunni area of Dinnieh in northern Lebanon and left 45 people dead.

The Sunni group also includes Palestinians, mostly dissidents of the fundamentalist Usbat al-Ansar (Band of Supporters), which was outlawed by Lebanese authorities in
1995 for murdering a rival cleric.

Jund al-Sham, which has no clear hierarchy or particular leader, is believed to have about 50 militants armed with assault rifles, mortars and rocket-propelled grenades.

Similar clashes have erupted in the same camp between the two sides since May, 2008. (dpa)