(KUNA) -- "The Storm Horsemen," a militant group affiliated mainstream Palestinian Fatah organization, claimed responsibility of firing two rockets at the southern Israeli settlement of Sderot Tuesday evening. Two Asef-3 missiles were fired at Sderot at 6:30 pm on Tuesday, the group said in a statement, adding that the attack came in retaliation for "the atrocities committed by the Israeli occupation forces against our people in Gaza Strip." The group warned Israel of launching more attacks and carrying out more military operations till "the liberation of Palestine." Earlier in the evening the Israeli army admitted that two missiles hit the town, adding that they led to no casualties.Meanwhile, Al-Aqsa Martyrs, also a militant group belonging to Fatah, claimed responsibility for attacking Ashkelon, south Israel, with an Aqsa-103 missile Tuesday evening. The attack came in response to Israel-erected road blocks and continued blockade on the Palestinian people, said a statement by the group, noting that newly-declared ceasefire did not mean to separate between Gaza Strip and the West Bank.