Several countries have dispatched their rescue teams to Haiti to begin the search operations for those who are still buried under the rubble of collapsed buildings following a devastating quake.<br/><br/>The United Nations Peacekeeping Mission in Haiti (MINUSTAH) has appealed for immediate assistance and the UN in New York will issue a flash appeal for aid in the coming days. <br/><br/>UN peacekeeping Chief Alain Le Roy said the Chinese team will reach the Caribbean country shortly.<br/><br/>The top UN official on humanitarian affairs John Holmes told journalists that two US teams were also expected to reach the country in a few hours.<br/><br/>Other countries, including France, Iceland and Dominican Republic are also sending their help and rescue teams.<br/><br/>An earthquake of 7.3-magnitude rocked the Caribbean nation of Haiti on Tuesday and damaged presidential palace besides other government buildings in the country's capital Port-au-Prince.<br/><br/>The country's prime minister warned the death toll may top 100,000 in a calamitous quake which left streets strewn with corpses and thousands missing in a scene of utter carnage. <br/><br/>Latest reports indicate that between 50 and 100 people, who were in the six-storey building of the UN headquarters in Haiti when it collapsed, have yet to be accounted for. Other UN offices have also been damaged, and 10 people are missing from the United Nations Development Programme compound.<br/><br/>The UN World Food Programme is airlifting an additional 86 metric tonnes of food from its emergency hub in El Salvador, including energy biscuits, to sustain thousands of people over seven days.<br/><br/>The UN has already released USD 10 million in emergency aid.<br/><br/>New Delhi says all Indians in Haiti are reportedly safe. The External Affairs Minister S.M. Krishna gave this information to reporters on Wednesday evening. There are 200 Indians in Haiti, most of them part of the UN Peace Keeping Mission. <br/><br/>The earthquake at magnitude seven had particularly deadly impact because it just struck ten kilometers below the earth's surface. This meant that the ground shook with a force that poorly constructed buildings could not withstand. Despite other recent natural disasters, Haiti is not accustomed to major tremors . There has been no significant earthquake there for more than hundred years. <br/>President Obama has described as heartbreaking the plight of those affected by what he called cruel and incomprehensible tragedy. He offered Haiti the unwavering support of the American people. He said he has directed his Administration to respond with a swift, coordinated and aggressive effort to save lives. He said the people of Haiti would have support of the American people in the urgent effort to rescue those trapped beneath the rubble and to deliver the humanitarian relief – food, water and medicine – that Haitians need in coming days. <br/><br/>Thousands of people in Haiti are spending a second night sleeping in the open away from buildings for fears of aftershocks after the catastrophic earthquake on Tuesday. It is still unclear how many people may have died. But the Haitian President, Rene Preval said estimates of the death toll in the devastating earthquake could easily be in the tens of thousands, while other officials said more than 100,000 may have perished. President Preval said that any sort of official estimate was extremely difficult as he was still trying to understand the magnitude of the event. He has also issued an appeal for world assistance. However, Prime Minister Jean-Max Bellerive has said he believed well over 100,000 died, based on the number of buildings that have collapsed. However, planes bringing medical and food aid and rescue teams have started to arrive at the main airport in Port au-Prince. The World Bank is to provide an extra one hundred million dollars an emergency aid to Haiti. The United States has also promised full support. <br/><br/>Meanwhile, UN officials in New York confirmed on Wednesday that 14 UN peacekeepers were killed by the earthquakes in Haiti. Alain LeRoy, undersecretary general for peacekeeping operations, said the UN expects the death toll of UN personnel to rise in coming days because of the estimated 50 to 100 personnel still unaccounted for. The head of the UN mission in Haiti, Hedi Annabi, and his deputy are still unaccounted for.