Gravely injured Haitians pleaded for help Wednesday after the strongest earthquake to hit the poor Caribbean nation in more than 200 years crushed thousands of structures, from humble shacks to the National Palace and the headquarters of U.N. peacekeepers.
Destroyed communications made it impossible to tell the extent of destruction from Tuesday afternoon's 7.0-magnitude tremor, or to estimate the number of dead lying among the collapsed buildings in Haiti's capital of about 2 million people. Among the missing was the head of the U.N. peacekeeping mission.
International Red Cross spokesman Paul Conneally said an estimated 3 million people may have been affected by the quake and that it would take a day or two for a clear picture of the damage to emerge. Clouds of dust thrown up by falling buildings choked Port-au-Prince for hours.
The United States and other nations began organizing aid efforts, alerting search teams and gathering supplies that will be badly needed in Haiti, the Western Hemisphere's poorest country. The international Red Cross and other aid groups announced plans for major relief operations.
Associated Press journalists based in Port-au-Prince found the damage staggering even for a country long accustomed to tragedy and disaster.
Aftershocks rattled the city as women covered in dust clawed out of debris, wailing. Stunned people wandered the streets holding hands. Thousands gathered in public squares long after nightfall, singing hymns.
It was clear tens of thousands lost their homes and many perished in collapsed buildings that were flimsy and dangerous even under normal conditions.
"The hospitals cannot handle all these victims," Dr. Louis-Gerard Gilles, a former senator, said as he helped survivors. "Haiti needs to pray. We all need to pray together."
An Associated Press videographer saw a wrecked hospital where people screamed for help in Petionville, a hillside Port-au-Prince district that is home to many diplomats and wealthy Haitians as well as the poor.
At a destroyed four-story apartment building, a girl of about 16 stood atop a car, trying to peer inside while several men pulled at a foot sticking from rubble. She said her family was inside.
U.N. peacekeepers, many of whom are from Brazil, were distracted from aid efforts by their own tragedy: Many spent the night hunting for survivors in the ruins of their headquarters.
At least four Brazilian soldiers were killed and five injured, Brazil's army said. Jordan's official news agency said three of its peacekeepers were killed and 21 were injured. A state newspaper in China said eight Chinese peacekeepers were known dead and 10 were missing — though officials later said the information was not confirmed.
U.N. peacekeeping chief Alain Le Roy said late Tuesday that the missing included mission chief Hedi Annabi of Tunisia, who was in the building when the quake struck. Some 9,000 peacekeepers have been in Haiti since 2004, including 1,266 Brazilians.
Much of the National Palace pancaked on itself, but Haiti's ambassador to Mexico, Robert Manuel, said President Rene Preval and his wife survived the earthquake. He had no details.
The quake struck at 4:53 p.m., centered 10 miles (15 kilometers) west of Port-au-Prince at a depth of only 5 miles (8 kilometers), the U.S. Geological Survey said. USGS geophysicist Kristin Marano called it the strongest earthquake since 1770 in what is now Haiti.
Most of Haiti's 9 million people are desperately poor, and after years of political instability the country has no real construction standards. In November 2008, following the collapse of a school in Petionville, the mayor of Port-au-Prince estimated about 60 percent of buildings were shoddily built and unsafe in normal circumstances.
Tuesday's quake was felt in the Dominican Republic, which shares the island of Hispaniola with Haiti, and in eastern Cuba, but no major damage was reported in either place.
With electricity knocked out in many places and phone service erratic, it was nearly impossible for Haitian or foreign officials to get full details of the devastation.
"Everybody is just totally, totally freaked out and shaken," said Henry Bahn, a U.S. Department of Agriculture official visiting Port-au-Prince. "The sky is just gray with dust."
In Washington, State Department spokesman P.J. Crowley said that U.S. Embassy personnel were "literally in the dark" after power failed.
"They reported structures down. They reported a lot of walls down. They did see a number of bodies in the street and on the sidewalk that had been hit by debris. So clearly, there's going to be serious loss of life in this," he said.
President Barack Obama offered prayers for the people of Haiti and said the U.S. stood ready to help. Secretary of State Hillary Rodham Clinton said the U.S. was offering full assistance — civilian and military — and a national organization of registered nurses called for nurse volunteers to provide care in Haiti.
Elizabeth Byrs, a spokeswoman for the U.N.'s humanitarian office, said it was working with independent aid agency Telecoms Sans Frontieres to get phone lines working again — a key element in organizing relief efforts.
Venezuela's government said it would send a military plane with canned foods, medicine and drinking water and provide 50 rescue workers. Mexico, which suffered an earthquake in 1985 that killed some 10,000 people, planned to send doctors, search and rescue dogs and infrastructure damage experts.
Italy said it was sending a C-130 cargo plane Wednesday with a field hospital and emergency medical personnel as well as a team to assess aid needs. France said 65 clearing specialists, with six sniffer dogs, and two doctors and two nurses were leaving.
Edwidge Danticat, an award-winning Haitian-American author was unable to contact relatives in Haiti. She sat with family and friends at her home in Miami, looking for news on the Internet and watching TV news reports.
"You want to go there, but you just have to wait," she said. "Life is already so fragile in Haiti, and to have this on such a massive scale, it's unimaginable how the country will be able to recover from this."
Associated Press videographer Pierre Richard Luxama in Haiti and AP writers David Koop and Olga R. Rodriguez in Mexico City; David McFadden and Danica Coto in San Juan, Puerto Rico; Matthew Lee in Washington; Alicia Chang in Los Angeles; Andrea Rodriguez in Havana; Tamara Lush in Tampa, Fla.; and Jennifer Kay and Christine Armario in Miami contributed to this report.
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