( CNN ) -- A suicide bomber blew up a booby-trapped car , killing three soldiers and wounding four others at an army checkpoint in Lebanon 's Bekaa Valley , according to the National News Agency ( NNA ) . The army said it has secured the area in Arsal , a town on the Syrian border , and is investigating the Saturday bombing . Lebanese Prime Minister Tammam Salam condemned the attack on the Army post as `` a repugnant terrorist act . '' He said : `` Operations of the sort will not affect the crucial political decision taken to combat terrorism and all forms of security breach , '' according to NNA . Hezbollah , which has a strong presence in the Bekaa Valley and supports the Syrian government in that country 's civil war , condemned the bombing . `` This [ attack ] proves that terrorism is , beyond any doubt , the enemy of all , without exception , '' it said , according to NNA . A group operating under the name Free Sunni Brigade in Baalbek claimed responsibility for the attack via Twitter . It claimed responsibility for a suicide attack earlier this month , that was later disputed by a more influential jihadi group . Mohammed Tawfeeq .
Three soldiers are killed in a suicide car bomb attack at a checkpoint . - March 10 : A suicide bomber kills five people and wounds 15 others when he blows himself up outside the U.S. Embassy in Kabul. Hezbollah has also condemned the attack as a terrorist act .