During initial search and rescue efforts, rescue crews heard the voice of a female trapped in the Surfside condo rubble, but were unable to reach her, Miami-Dade County Fire Chief Alan Cominsky said
While speaking to reporters Cominsky was asked about a female voice that was heard in the first few hours after the collapse. Rescue workers heard "audible sounds" of a female voice during the initial search and rescue efforts while working underneath the condo structure, he said.
Cominsky said crews heard the woman's voice for several hours and kept searching until she could no longer be heard.
"Eventually we didn't hear her voice anymore ... we continued to search," he said. "And, again, that's emphasizing the magnitude of what we're going through."
"The efforts that all of our fire and rescue personnel, everyone that is here on scene, trying to do the best we can in these heroic efforts," Cominsky said. "Unfortunately, we didn't have success."
Eighteen people are known to have died in the collapse and as many as 145 people remain missing, numbers that have remained unchanged since Wednesday.