Aaron Hultgren no longer employed by Legacy Development

Copper Lounge building following the collapse. File photo.

(KSFY) - The man involved in an investigation in connection to a building collapse in downtown Sioux Falls is no longer employed by the company that developed the project.

Aaron Hultgren is no longer employed by Legacy Development, according to spokesperson Stacy Jones.

Hultgren has "chosen to pursue other opportunities," Jones said. Legacy Development did not provide any further information about the details surrounding his departure.

Legacy Development was developing the Copper Lounge building when it collapsed in December of 2016.

Hultgren's company, Hultgren Construction, was remodeling the building at the time. His employee, 24-year-old Ethan McMahon, was killed in the incident.

In addition to his construction company overseeing the remodeling, Hultgren was also working as the director of operations and development with Legacy Development at the time.

Federal prosecutors are looking at the possibility of criminal charges in connection with the Copper Lounge building collapse.