With anger over food prices threatening the stability of this Caribbean nation already haunted by chronic hunger, the U.N. World Food Program appealed for donations to meet its US$96 million (euro61 million) aid goal for Haiti. It has collected less than 15 percent of the annual budget goal.

On Saturday, President Rene Preval announced subsidies to lower the price of rice and Haitian lawmakers fired Prime Minister Jacques Edouard Alexis for failing to boost food production.

But aid workers said the measures might not be enough to ease popular anger if hunger continues to rise.

Mamadou Mbaye, who heads the U.N. World Food Program's office in Haiti, said fixing Haiti's systemic problems like unemployment and dependence on imported food cannot be accomplished immediately, and that means unrest could continue.

"Some measures will generate results in the long term ... but whether people will be willing to wait for that is another issue," he said.

Mbaye said the violence is hampering his agency's efforts to feed people. Children who used to depend on school-lunch programs and adults who participate in work-for-food programs have been forced to stay home, burdening families, he said.

Haiti imports almost all its food and global food prices have risen 40 percent since mid-2007. Locally, the prices of rice and pasta have doubled in parts of the capital of Haiti, a country where 2.4 million people already cannot afford the minimum daily calories recommended by the World Health Organization.

On Saturday, Preval announced that international aid and local importers would work together to lower rice prices by 15 percent.

A week of hunger-provoked protests and looting have already left six people dead, including a Nigerian officer with the 9,000-member U.N. police force who was pulled from a car and killed Saturday afternoon. Three Sri Lankan peacekeepers on patrol were injured by gunfire earlier in the week.

Preval is mulling over candidates to replace Alexis as prime minister, while some Haitians speculate lawmakers could go after the president next. Sen. Youri Latortue told reporters that legislators would be prepared to consider a new prime minister on Monday.

A lull in violence Sunday allowed residents to shop in markets and attend church in the Haitian capital. U.N. peacekeepers reported no new violence or widespread protests.

But aid workers said that volatile protests were likely to continue because of sustained high food prices in the poorest country in the Western Hemisphere.

As prices increase, desperation is spreading from the slums to Haiti's working poor, part of the impetus for this week's demonstrations, said Bill Canny of Catholic Relief Services.

Dumas Antenor, a 54-year-old father of 14, said just one can of rice costs a fifth of the US$4 (euro2.50) he earns on a good day loading group taxis in the hills above Port-au-Prince.

"I hope that one day I'll see rice go back down at least 10 gourdes (26 cents; 16 euro cents) and I will be able to feed my kids at least two meals a day," he said.

Canny said Catholic Relief Services continues to distribute food to tens of thousands of vulnerable children, pregnant women and the sick. But the program will need more donations if hunger spreads to poor people with slightly higher incomes.

"The international community has to work with the government to come together" to ease the hunger crisis, he said.

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Associated Press Writer Evens Sanon contributed to this report.

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