YANGON, Myanmar (AP) - The death toll from the cyclone that battered Myanmar last weekend rose above 22,000 Tuesday as the international community prepared to rush in aid, state radio reported.
A news broadcast on government-run radio said that 22,464 people have now been confirmed dead from Cyclone Nargis, which tore through the country's rice bowl and biggest city of Yangon early Saturday.
The broadcast added that thousands more are missing.
Relief efforts for the stricken area, mostly in the low-lying Irrawaddy River delta, have been difficult, in large part because of the destruction of roads and communications outlets by the storm.
In the cyclone's aftermath, state radio reported that the government was delaying a constitutional referendum in areas hit hardest.
Saturday's vote on a military-backed draft constitution would be delayed until May 24 in 40 of 45 townships in the Yangon area and seven in the Irrawaddy delta, which took the brunt of the weekend storm, the radio said.
It indicated that the balloting would proceed in other areas as scheduled.
The U.N. World Food Program, which was preparing to fly in food supplies, offered a grim assessment of the destruction: up to a million people possibly homeless, some villages almost totally destroyed and vast rice-growing areas wiped out.
"We hope to fly in more assistance within the next 48 hours," WFP spokesman Paul Risley said in Bangkok. "The challenge will be getting to the affected areas with road blockages everywhere."
Based on a satellite map made available by the United Nations, the storm's damage was concentrated over about a 11,600-square-mile (30,000-square-kilometer) area along the Andaman Sea and Gulf of Martaban coastlines — less than 5 percent of the country.
But the affected region is home to nearly a quarter of Myanmar's 57 million people.
Images from state television showed large trees and electricity poles sprawled across roads as well as roofless houses ringed by water in the delta, regarded as Myanmar's rice bowl.
Aid agencies reported their assessment teams had reached some areas of the largely isolated region but said getting in supplies and large numbers of aid workers would be difficult.
Richard Horsey, Bangkok-based spokesman for the U.N. Office for the Coordination of Humanitarian Aid, said the airport closest to the delta region was located in Yangon.
"For those places accessible by land, there will be cars and trucks from those areas to meet at the halfway point with vehicles from Yangon," he said. "For remote areas, assessment teams and assistance teams will need to go by helicopters and boats."
The delta is riddled with waterways but Horsey said they are not easily accessible, even during normal times.
"More or less all the land lines are down and it's extremely difficult to get information from cyclone-affected areas. But from the reports we are getting, entire villages have been flattened and the final death toll may be huge," said Mac Pieczowski, who heads the International Organization for Migration office in Yangon, in a statement.
The country's ruling military junta, which has spurned the international community for decades, urgently appealed for foreign aid at a meeting Monday among Nyan Win and diplomats in Yangon.
"Instead of waiting for figures on casualties and damage, it will be practical to send humanitarian aid to victims as soon as possible," Relief and Resettlement Minister Maj. Gen. Maung Maung Swe told a press conference Tuesday.
The appeal came less than a week ahead of the referendum on a military-backed constitution that the junta hoped would go smoothly in its favor, despite opposition from the country's feisty pro-democracy movement. However, the disaster could stir the already tense political situation.