Greek Prime Minister Lucas Papademos is set to negotiate with leaders of the political parties supporting his caretaker government after he missed another deadline to secure a second aid package.

Papademos will meet with the chiefs in Athens today after delaying the meeting for a second time in as many days while Greek officials and international creditors haggle over the terms. The talks are scheduled for 3 p.m. local time, his office said. He held an unscheduled meeting late last night with the so-called troika, comprising the European Commission, the European Central Bank and the International Monetary Fund, to put the final touches on terms required for a 130 billion-euro ($172 billion) rescue package.

Yesterday's delay was yet another hitch in completing a package that's been on the table since July. The Greek government, facing a 14.5 billion-euro bond payment on March 20, is struggling to arrange financing to avert a collapse of the economy, risking a new round of contagion in the euro area.