The company's stock has lost over 80 percent of its value since broader concerns over the operations of India's shadow banking sector emerged in September.
Investigative media outlet Cobrapost said in a report last month loans from Indian state banks were diverted by Dewan to shell companies, including those linked to its controlling shareholders. Dewan has denied the allegations.
(Reporting by Sudarshan Varadhan; Editing by Jan Harvey)
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