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Israeli and Palestinian leaders have said they are committed to a ceasefire agreed for the Gaza Strip, despite Palestinian rockets landing in Israel.Israeli Prime Minister Ehud Olmert has said Israel will show "patience and restraint", al1though the rockets were fired from Gaza after the truce began.
Mr Olmert said he hoped the ceasefire would also be applied to the West Bank.
Hamas leader Ismail Haniya said all Palestinian groups had made clear that they stood behind the ceasefire.
"Contacts were made with the political leaderships of the factions and there is a reaffirmation of the commitment of what has been agreed to," Reuters news agency quoted Mr Haniya as saying.
Palestinian Authority President Mahmoud Abbas has ordered his security forces to enforce the truce.
Mr Abbas telephoned Mr Olmert on Saturday night to say he had agreement from all Palestinian factions that they would stop their rocket fire.
Mr Olmert's spokeswoman Miri Eisin told the BBC that the prime minister had agreed that Israeli forces would not initiate any offensive action after the ceasefire began.
Shortly after the truce came into effect, the Israeli army confirmed that all its troops had left Gaza.
The BBC's Alan Johnston in Gaza says it is not clear whether this means that the security men will actually be expected to use force against militants who might be about to launch rockets.
They have been reluctant to do so in the past, he says.
Hamas' armed wing said it launched the attacks because some Israeli troops were still in Gaza, east of the town of Jabaliya, despite the Israelis saying they had pulled out all their troops overnight.