The Islamic Jihad movement's armed wing,known as Saraya al Quds, claimed responsibility on Monday for firing three homemade rockets at the southern Israeli town of Sderot.
The group said in a leaflet to reporters that its militant fired from northern Gaza three homemade rockets called "Quds2" at Sderot,adding that three rockets made big explosions in the town.
The leaflet said that the attack was retaliatory to the earlier killing of a Jihad militant in a village near the northern West Bank town of Tulkarem.
The group reiterated that "the choice of armed resistance would be the only choice to confront the Zionist enemy and its attacks and crimes on our innocent people," adding "such crimes would be retaliated."
The calmness period, or truce, reached by Palestinian factions in their Cairo dialogue in March, "felt down under the chains of the Zionist army's tanks after assassinating our Hero in Tulkarem,"said the leaflet.
Earlier in the day, Khader Habib, a leading Islamic Jihad figure in Gaza told reporters that the ongoing Israeli violations of the truce "didn't give any tiny space for the truce between the two sides to continue."
He warned that the calmness period agreed in Cairo "is dying."