Port-au-Prince, Haiti (CNN) -- Rescue workers struggled to clear rubble and bodies Wednesday from the streets of Haiti's "flattened" capital, where a government official said the death toll from Tuesday's 7.0-magnitude earthquake may exceed 100,000. Thousands of injured people waited for care outside badly damaged hospitals, while an unknown number remained trapped inside collapsed buildings. Basic services like water and electricity were out, and Haitian President Rene Preval said his government needs help clearing streets so rescuers can reach some of the hardest-hit areas. "We need medicine. We need medical help in general," Preval told CNN. "Some of the hospitals, they collapsed." People were digging though the rubble of leveled buildings with their hands Wednesday, looking for survivors or bodies, CNN's Anderson Cooper reported from Port-au-Prince. Other CNN correspondents in Port-au-Prince and its suburbs reported whole blocks of collapsed buildings, with dozens of bodies piled in the streets. Impact Your World: How you can help Video: Devastation in Haiti Video: Aid arives in Port-au-Prince Video: Quake rubble rescues 10 biggest quakes since 1900 RELATED TOPICS Haiti Earthquakes Port-au-Prince Video images captured just moments after the temblor show dust-covered survivors rushing through the streets, yelling in terror. Others trapped in buildings…