The Lebanese Army discovered three rockets ready to be launched into Israel Wednesday evening, hours after three others had been fired at the North. Two of the rockets landed on the Lebanese side of the border and one landed in a field in the Upper Galilee. The IDF responded by firing artillery shells at the Katyusha launch pads. Lebanese officials said that the rockets were fired near the village of Kfar Hamam in southern Lebanon and IDF sources said they were likely fired by a Palestinian terror group. The sources said, though, that Hizbullah had likely given a green light for the attack. "Nothing happens in southern Lebanon without Hizbullah knowing about it," one defense official said, adding that the rocket launchers were likely connected to the Popular Front for the Liberation of Palestine-General Command. The Northern Command announced it was holding ongoing security assessments of the situation. "We view the Lebanese government and military as responsible to prevent such attacks," the IDF said in a statement. Following the strike, the Home Front Command ordered all residents of the North to stay close to bomb shelters in case there was a second attack. Students in Kiryat Shmona were moved into bomb shelters to complete the rest of their school day. Last Thursday, three Katyusha rockets struck Nahariya, one of which slammed into a retirement home. Two people were lightly injured. Lebanon's government moved quickly Wednesday to condemn the morning rocket firing, and ordered more troops to the southern border region. Lebanese Information Minister Tarek Mitri said such attacks "harm national interest" and could give Israel a pretext to attack. UNIFIL commander Maj.-Gen. Claudio Graziano urged both Lebanon and Israel to exercise restraint. AP contributed to this report.