evidence: Still, the al-Qaa attacks have significantly raised tensions in Lebanon. Previous reports of Lebanese security forces arresting alleged IS sleeper cells in the north had only heightened fears that the militants may soon lash out in Lebanon as they lose territory in Syria and Iraq. Lebanese security officials warned al-Qaa could be the "harbinger of a wave of terrorist operations," according to a statement released after meeting Prime Minister Tamim Salaam on Tuesday. [...] Senior Lebanese politicians blamed Syrians from nearby camps for the bombings in al-Qaa, although Interior Minister Nouhad Machnouk later announced that four of the eight attackers had entered Lebanese territory from Syria itself.