JERUSALEM (CNN) -- Palestinian militants fired more rockets into Israel on Friday as a tenuous six-month truce between Hamas and Israel expired.



Palestinian children look at a blast crater following an Israeli airstrike over southern Gaza on December 18.



Two Qassam rockets were fired Friday morning from Gaza into separate Israeli communities, the Israel Defense Forces said. Earlier, Palestinians in Gaza shot at Israeli farmers working in their fields in Kibbutz Nirim, the IDF said.



No one was hurt in the attacks and one car was damaged, it added.



Islamic Jihad sources claimed responsibility for firing the rockets.



Under the Egytian-brokered truce, which began June 19, the Hamas government in Gaza agreed to end militant attacks from Gaza on Israel. The pledge applied to all militant groups in the coastal territory, including Islamic Jihad.



In return, Israel agreed to halt raids inside Gaza and ease its blockade.



The truce held well for the first four months but began to fall apart in October, when there was a marked increase in the number of rockets fired from Gaza into Israel -- estimated at 200. Israel resumed airstrikes in Gaza as a result.  Watch what may follow the end of the truce »



Israel has said a major military operation in Gaza may be unavoidable if daily rocket fire from the territory continues.



However, both sides have expressed a desire not to see the situation worsen.



Islamic Jihad said it planned a rally in Gaza City in the afternoon, after Friday prayers, announcing the end of the truce but also calling for a lifting of the Israeli siege.



Israel has tightened its restrictions on border crossings and the flow of goods into the impoverished territory, making life extremely difficult for residents.



Gaza depends on Israel for 90 percent of its imports, according to the U.N. Development Program.



-- CNN's Ben Wedeman and Michal Zippori contributed to this report.
Who claimed responsibility for firing the rockets? Who claimed responsibility for firing rockets? What was the ceasefire applied to? Which groups did the ceasefire apply to? With what groups did the ceasefire apply? When did the truce start? Who claimed responsibility? When did the Egyptian-brokered truce begin?
Islamic Jihad Islamic Jihad sources all militant groups in the coastal territory, Hamas and Israel all militant June 19, Islamic Jihad sources June 19,
question: Who claimed responsibility for firing the rockets?, answer: Islamic Jihad | question: Who claimed responsibility for firing rockets?, answer: Islamic Jihad sources | question: What was the ceasefire applied to?, answer: all militant groups in the coastal territory, | question: Which groups did the ceasefire apply to?, answer: Hamas and Israel | question: With what groups did the ceasefire apply?, answer: all militant | question: When did the truce start?, answer: June 19, | question: Who claimed responsibility?, answer: Islamic Jihad sources | question: When did the Egyptian-brokered truce begin?, answer: June 19,