CHICAGO (CBS) — A construction crane fell down Wednesday afternoon at the Salesforce Tower project site at Wolf Point in River North.

The crane was hoisting a section of metal stairs when it collapsed at the Salesforce Tower project at 333 W. Wolf Point Plaza, according to the International Union of Operating Engineers Local 150.

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Wolf Point Crane Collapse

(Credit: International Union of Operating Engineers Local 150)

Wolf Point Crane Collapse

(Credit: International Union of Operating Engineers Local 150)

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The Chicago Department of Buildings came to the scene right away, the union said.

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No injuries were immediately reported, the union said.

CBS 2 Chicago Staff