Sunil Rangaon (27), Dilip (28) and Kamal (30) were unloading the marble slabs from the truck at the cotton ginning factory of MLA Balkrishna Patidar situated on Temla road here.
"Suddenly, the heavy marble slabs came crashing down in huge quantity and the labourers were caught under it, killing them on the spot," District Superintendent of Police Amit Singh said.
The marble stock had been brought to the factory for a construction work in progress, he said.
Further investigation into the case is on.
