Main contractor on the site is Bovis Lend Lease. A statement with the firm said that the company was conducting its own investigation with the concrete subcontractor while working with local authorities to determine the cause.

“Our hearts go out to the family of the deceased concrete worker, and our prayers are with the injured workers,” the statement said.

The site was cited for operating a crane in an unsafe manner and failing to safeguard public property, according to the Associated Press.