With a deadline approaching, the Islamic group Hamas on Sunday showed no signs of giving in to an ultimatum from President Mahmoud Abbas to accept a plan that implicitly recognises Israel. Representatives from Hamas and Abbas' Fatah movement met Sunday to discuss the plan, but said there was no progress and that hopes of an agreement were fading. Abbas has given Hamas until Tuesday to accept the plan or face a national referendum that he is widely expected to win. Hamas, which defeated Fatah in January legislative elections, has been debating the proposal since Abbas issued his ultimatum late last month. Hamas officials say the group is deeply divided.Parliament speaker Abdel Aziz Duaik, who represented Hamas in Sunday's meeting, said talks have stalled on procedural issues. Hamas is demanding that the dialogue be moved to its Gaza Strip stronghold, where most of its leaders are located. He said the other participants in Sunday's meeting, including top Fatah official Raouhi Fattouh, agreed to go to Gaza later in the day to meet Hamas leaders. But officials said Abbas has no plans to head to Gaza. Israel does not permit Hamas leaders to travel between the West Bank and Gaza.