YANGON, Myanmar A U.N. official says Myanmar's government has not given clearance for relief flights to land with food aid for cyclone survivors.</p><p>World Food Program spokesman Paul Risley says three flights are waiting to take off from Dubai, Dhaka and Thailand with high-energy biscuits. A fourth shipment aboard a scheduled Thai Airways cargo flight is likely to bring some biscuits later Thursday.</p><p>The U.N. had earlier said that they had been given clearance and had been expected to the planes to land early Thursday.</p><p>Risely told The Associated Press that the WFP is in "constant touch" with the military junta to obtain permission for the flights to land but there has been no word from officials.</p><p>He said "it is especially frustrating that critically needed food aid is being held up."</p><p>THIS IS A BREAKING NEWS UPDATE. Check back soon for further information. AP's earlier story is below.</p><p>YANGON, Myanmar (AP) - Hungry people swarmed the few open shops and fistfights broke out over food and water in Myanmar's swamped Irrawaddy delta Wednesday as a top U.S. diplomat warned that the death toll from a devastating cyclone could top 100,000.</p><p>The minutes of a U.N. aid meeting obtained by The Associated Press, meanwhile, revealed the military junta's visa restrictions were hampering international relief efforts.</p><p>Only a handful of U.N. aid workers had been let into the impoverished Southeast Asian country, which the government has kept isolated for five decades to maintain its iron-fisted control. The U.S. and other countries rushed supplies to the region, but most of it was being held outside Myanmar while awaiting the junta's permission to deliver it.</p><p>Entire villages in the Irrawaddy delta were still submerged from Saturday's storm, and bloated corpses could be seen stuck in the mangroves. Some survivors stripped clothes off the dead. People wailed as they described the horror of the torrent swept ashore by the cyclone.</p><p>"I don't know what happened to my wife and young children," said Phan Maung, 55, who held onto a coconut tree until the water level dropped. By then his family was gone.</p><p>A spokesman for the U.N. Children's Fund said its staff in Myanmar reported seeing many people huddled in rude shelters and children who had lost their parents.</p><p>"There's widespread devastation. Buildings and health centers are flattened and bloated dead animals are floating around, which is an alarm for spreading disease. These are massive and horrific scenes," Patrick McCormick said at UNICEF offices in New York.</p><p>Myanmar's state media said Cyclone Nargis killed at least 22,980 people and left 42,119 missing.</p><p>American diplomat Shari Villarosa, who heads the U.S. Embassy in Yangon, said the number of dead could eventually exceed 100,000 because safe food and water were scarce and unsanitary conditions widespread.</p><p>The situation is "increasingly horrendous," she said in a telephone call to reporters. "There is a very real risk of disease outbreaks."</p><p>Myanmar's state television Thursday showed Prime Minister Lt. Gen. Thein Sein distributing food packages to the sick and injured in the delta and soldiers dropping food over villages. The date of the distributions was not given.</p><p>A few shops reopened Wednesday in the Irrawaddy delta, but they were quickly overwhelmed by desperate people, said Paul Risley, a spokesman for the U.N. World Food Program in Bangkok, Thailand, quoting his agency's workers in the area.</p><p>"Fistfights are breaking out," he said.</p><p>A Yangon resident who returned to the city from the delta area said people were drinking coconut water because there was no safe drinking water. He said many people were on boats using blankets as sails.