Syria denies links to the group, Fatah al-Islam, which has been fighting with the Lebanese army around Nahr al-Bared camp.
''Unfortunately I expect that the explosions will increase,'' Jumblatt told reporters in Beirut, where bombs exploded in the evenings of Sunday and Monday, killing one person.
Jumblatt, along with his allies in the governing coalition, accuse Damascus of orchestrating a series of attacks in Lebanon, including assassinations of anti-Syrian leaders such as former Prime Minister Rafik al-Hariri in 2005.
The United States, France and Britain last week circulated a draft UN resolution that would set up an international tribunal for suspects in the attacks.
A UN inquiry into the killing has implicated Syria and Lebanese officials in the Hariri killing. Damascus denies involvement.
REUTERS SS ND1544