Investigators began what could be a long search for the cause of the Brooklyn building collapse as excavation of the site started on Friday, with the fire department ending rescue operations on Thursday after the last victim was freed from the wreckage. The death toll reached eight, including two children aged 9 and 10, and 18 people were injured, including four firefighters.
Why it matters
The probe has widened beyond the single site. Mayor Zohran Mamdani ordered inspections at about 100 building sites involving companies related to the project, turning a single collapse into a citywide review of construction safety. The move answers the anger in the Flatbush neighbourhood, where residents have demanded accountability for a building that fell in the middle of the afternoon.
The focus of the investigation is the excavation next door, where construction workers were digging when the building buckled. City records show contractors there had previously violated a city order to stop demolition, and developers planned a nine story property with 64 flats and a ground floor supermarket at the site. The buildings commissioner said inspectors are conducting structural stability inspections of nearby buildings.
What happens next
The search for clues will take time. Construction safety experts say it is way too early to know what caused the accident, and the fire department has warned that finding clues in the rubble will take weeks. The one story building previously on the site was demolished earlier this year, and the records of that work will be part of the investigation.
For now, the rescue is over and the excavation begins. Eight families are grieving, the injured are recovering, and the city will be judged on whether the inspections find the next risk before it falls.
The Department of Buildings said its inspectors are on scene at the major building collapse near Flatbush Avenue, assisting with recovery operations and conducting structural stability inspections of nearby buildings. The Red Cross opened a reception centre at the Flatbush YMCA at 1401 Flatbush Avenue, and registered 12 adults and three children across six households. The victims ranged in age from 9 to 31, and some were from Mexico, Colombia, Ecuador and Trinidad, according to city officials.

