Rescuers still hope to find survivors in the debris of a partially collapsed building in Florida more than 48 hours after it pancaked, with scores feared trapped inside, officials said Saturday. "We continue to have hope," Miami-Dade County mayor Daniella Levine Cava told reporters in Surfside, adding that the toll of four dead and 159 people unaccounted for in the building, which collapsed in the early hours of Thursday, had not changed. "We're continuing to search. We're looking for people alive in the rubble. That is our priority and our teams have not stopped," she said. bur-st/bbk