A penalty of Rs 77 crore has been imposed on a private construction company for allegedly extracting 'murum' soil and stones illegally from various sites here in Maharashtra and using them in the construction of the Mumbai-Nagpur Expressway passing through Jalna, an official said.

A revenue department squad during a recent inspection found that the illegal extraction was done in Jamwadi, Gondegaon, Warud, Nandapur, Shrikrishna Nagar and Thar areas here, the official said on Wednesday.