Video shows the moment an apartment block in Miami-Dade in Florida collapsed suddenly.
Hundreds of people remain unaccounted for after the partial collapse of a beachside building and four people have been confirmed dead.
Miami-Dade Mayor Daniella Levine Cava noted on Friday that rescue officials are still searching for survivors more than 24 hours after the building collapsed early on Thursday
Miami condo collapse: death toll rises to four and more than 150 unaccounted for