Officials in Lebanon say they have arrested six men who have confessed to bus bombings last month outside the capital, Beirut.
The officials, who requested anonymity, say the six are part of a Palestinian group called Fatah Islam. They say some of the men are Syrian and all were operating out of an apartment in a Christian neighborhood of Beirut.
Officials say two more members of the cell remain at large.
In a statement, the group denied involvement in the bombings.
In February, explosions ripped through two buses on a road northeast of Beirut, killing three people. The explosions occurred near the hometown of former President Amin Gemayel and his son, the late cabinet minister Pierre Gemayel, assassinated in November.
Pierre Gemayel, a Christian, was against Syrian interference in Lebanon.
The bombings occurred one day before the second anniversary of the slaying of former Prime Minister Rafik Hariri who also spoke against Syrian interference.
Tensions between pro- and anti-Syrian politicians in Lebanon have sparked a political crisis that has, in turn, fueled sectarian tensions.
Some information for this report was provided by AFP and Reuters.