Beirut , Lebanon ( CNN ) -- At least four people were killed and about 15 wounded when a car bomb exploded Saturday near Lebanon 's border with Syria , an official said . The incident occurred at about 6 p.m. ( 11 a.m . ET ) near a fuel station at the entrance to the Lebanese town of Hermel , Lebanon 's National News Agency reported . Interior Minister Marwan Charbel told Al-Manar TV that the blast occurred when a suicide bomber driving a Jeep Grand Cherokee detonated the explosives . Charbel called the country 's security situation `` unstable and changing for the worse with every passing day . '' Video from the scene showed people running in front of fires blazing in the darkness . Caretaker Prime Minister Najib Mikati denounced the explosion . `` Once again , the hands of treason target a Lebanese region and claim the lives of innocent citizens , '' said Mikati , imploring all sides to unite for the sake of the country and its people , NNA reported . The U.S. Embassy in Beirut condemned the bombing . `` We regret that the people of Hermel have once again been subjected to an act of reprehensible terrorism . We urge all parties to exercise restraint and refrain from contributing to the cycle of violence . '' CNN 's Mohammed Tawfeeq in Atlanta and Neda Husseini in Beirut contributed to this report .
NEW : Syrian Embassy in Lebanon condemns attack . Driver of Jeep exploded bomb , Interior Minister injured . The blast occurred near Lebanon 's border with Syria . Caretaker prime minister pleads for unity .