A controlled explosion brought down the unstable remains of the collapsed apartment block in Florida late Sunday ahead of a threatening tropical storm as rescuers prepare to resume searching for victims.
Video footage showed the 12-story Champlain Towers South in Surfside, outside Miami, being demolished 10 days after most of the building collapsed in the early hours of June 24.
The confirmed death toll from the disaster is 24, with 121 people missing.
Search-and-rescue efforts were temporarily suspended during the demolition and will soon restart again.
As of Sunday afternoon, Tropical Storm Elsa was off the coast of Cuba with winds of 60 miles per hour (95 kph). After moving across Cuba later on Sunday and Monday, the storm was forecast to approach western Florida on Tuesday or Wednesday.
In the wreckage of the Champlain Towers South complex in Surfside, workers were drilling into columns where small explosive charges will be placed to bring the remains of the building down in a small area, officials said.
Residents in nearby buildings do not need to evacuate but should stay indoors and turn off air conditioning due to dust, the mayor said.
Instead of the usual fireworks and flag-waving parties, beachside communities in the area have planned more subdued events for the Fourth of July. Miami Beach canceled its Independence Day celebrations.
Investigators have not determined what caused the 40-year-old complex to collapse on June 24. A 2018 engineering report found structural deficiencies that are now the focus of inquiries that include a grand jury examination.
All residents of another building, Crestview Towers in North Miami Beach, were told on Friday to leave immediately after engineers found serious concrete and electrical problems, officials said.
The move was considered urgent because of the approach of Elsa, North Miami Beach City Manager Arthur Sorey said, adding that the building's owners had not yet begun a mandatory safety recertification process required 40 years after it was built.
"It's definitely not an easy decision," Sorey said. "It's just the right thing to do during these times. It's uncertain what's going to happen with the storm."
(FRANCE 24 with AFP and REUTERS)