Lebanon's former prime minister, meanwhile, announced that Saudi Arabia is granting USD 1 billion in aid to the Lebanese army to support its fight against militants.
The initial truce, brokered yesterday, was meant to end days of fighting in the eastern town of Arsal and allow for negotiations for the release of captive Lebanese soldiers.
Clashes broke out again after Syrian militants in Arsal opened fire on Lebanese troops early today and then spread through several fronts across the predominantly Sunni town, according to the Lebanese National News Agency.
Fighting in Arsal first began on Saturday when militants from Syria overran the town, which lies near the border with Syria. They seized Lebanese army positions and captured a number of soldiers and policemen, demanding the release of a prominent Syrian rebel commander, Imad Ahmad Jomaa, who was arrested in Lebanon earlier on Saturday.
The capture of Arsal was the first time in Syria's conflict, now in its fourth year, that rebels seeking the overthrow of President Bashar Assad carried out a large-scale incursion into Lebanon, raising concerns that the tiny country is being further sucked into its larger neighbor's bloodletting.
Former Lebanese Prime Minister Saad Hariri, on a visit to Jiddah, Saudi Arabia, announced that the kingdom was providing the Lebanese army with USD 1 billion in aid.