Federal investigators have zeroed in on flaws in the pool deck as the preliminary cause of the 2021 collapse of a 12-story Florida beachfront condominium that killed 98 people.

Federal investigators determining why a Florida condominium tower partially collapsed three years ago have determined there were many faulty support columns in the tenant garage that ran below it and the adjoining pool deck.

Federal investigators discussed their investigation as the one-year mark for the Surfside condo collapse approaches.