Severe weather in downstate Edwardsville, Illinois, resulted in the collapse of a part of an Amazon building, killing at least six people.  Edwardsville police said a piece of the warehouse in the 3000 block of Gateway Commerce Center Drive South fell on Friday due to a “severe weather event.”

 The National Weather Service is still determining if the region was affected by a tornado or if straight-line winds caused damage to the structure.

At least one person was brought to a local hospital, while others were treated on the spot for minor injuries. The number of people injured in the collapse has yet to be established.

As first responders search through the wreckage, they face a range of challenges, including fallen power lines and broken water lines. Structural experts were dispatched to the scene to examine if the concrete components of the structure were safe enough for firefighters to continue searching for survivors.

Amazon management is on the ground to assist in identifying those who had worked in the facility, but no official number of employees who were working during the collapse was revealed.

Amazon said in a statement that it was “deeply saddened” by the incident. The company committed to helping the employees and their families who had been impacted by the tragedy.

State and municipal officials said at least 79 people had been killed after a series of tornadoes raced through the Midwest and Southeast overnight. Tornadoes wreaked havoc in Arkansas, Kentucky, Missouri, Mississippi, and Tennessee, and Illinois.

Illinois Governor JB Pritzker expressed his condolences to the victims and said that he has already reached out to the mayor to provide any resources needed.