An Israel helicopter fired three missiles at the disused control tower at Gaza's defunct airport Tuesday, Hamas officials in the area said, adding that there were no casualties in the raid. The IDF said that the air force fired at three armed men seen in the vicinity of the airport, near southern Gaza's border with Israel, but gave no further details. The airport was closed down shortly after the outbreak of the Palestinian uprising against Israel in 2000. The strike came after four Kassam rockets were fired at Israel from the Gaza Strip earlier Thursday. Two of the rockets landed near Sderot, while two others landed in open areas in the western Negev. Nobody was wounded in the attacks, and no damage was reported. The Islamic Jihad claimed responsibility for two of the attacks. Five days ago, the IDF reported that a massive terror attack had been foiled foiled Saturday night when an IAF air strike on two vehicles near the southern Gaza Strip's border with Egypt killed two Palestinians, including an Islamic Jihad operative, and wounded 21 others. The army said that one of the vehicles was carrying Islamic Jihad operatives and was filled with explosive devices including suicide bomb belts. The group, said the IDF, was on its way to carry out a huge terror attack against Israelis. Yaakov Katz contributed to this report.