Rescuers walk away from the rubble of the Champlain Towers South collapse, during a shift change, in Surfside, Fla. on Thursday, July 8, 2021. Rescue workers now focused on finding remains instead of survivors in the rubble of the Florida condominium collapse vowed to keep up their search for victims until they cleared all the debris at the site.

SURFSIDE, Fla. — Rescue workers now focused on finding remains instead of survivors in the rubble of a Florida condominium collapse vowed Thursday to keep up their search for victims until they cleared all the debris at the site.

A fire official told family members at a meeting that crews “will not stop working until they've gotten to the bottom of the pile and recovered every single of the families' missing loved ones,” Surfside Mayor Charles Burkett said at an evening news conference. He did not identify the official, but said the families were grateful.

“This is exactly the message the families wanted to hear,” he said.

The death toll rose to 64, with another 76 people unaccounted for, Miami Dade Mayor Daniella Levine Cava said.