Health and Safety Executive officers are likely to investigate an accident which left two men needing hospital treatment.
The men were injured last night at a building in Preston Street, Bradford, when a concrete floor collapsed under the weight of a forklift truck they were in.
One man sustained head injuries while the other required medical treatment after wounding his shoulder. Both men were taken to hospital but are not understood to have been seriously hurt.
A spokesman for the HSE said it had not yet started a probe but he confirmed officers had been advised of the incident and were now awaiting further details from the emergency services.
The Preston Street building was sold last year by HC Slingsby, which manufactures industrial containers, after it had relocated to Otley Road, Baildon.
Despite attempts by the Telegraph & Argus, the new owners of the premises could not be contacted for comment.
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