quote from original CNN article called: "As engineers hunt for answers in the Surfside Building collapse, signs point to the buildings lower reaches

 partial quote from original CNN article before it was modified:

"The notion that the building collapsed due to a failure at or near its base seems to be supported by a report that Michael Stratton who was on the phone with his wife, Cassondra, who told him their building was shaking just before the collapse. She was looking out from the condo at Champlain Towers South when she told him she saw "a sinkhole where the pool out her window used to be," he told the Miami Herald"

"The phone call then cut off (when his wife died in the collapse),  (Cassondra) Stratton is among the scores of people who remain unaccounted for days after the collapse." end partial quote from original article.