India, Oct. 25 -- Justice (retired) Deepak Verma, a former Supreme Court judge, has provided an expert opinion on behalf of Nirav Modi, based on which the fugitive businessman has recently sought to reopen his extradition proceedings in London, people familiar with the development said.

Verma is learnt to have supported Modi's plea, in which the jailed diamantaire claimed that if extradited, he could be interrogated by multiple agencies and would not receive a fair trial in India's judicial system, according to an officer who requested anonymity.

The former Supreme Court judge, who also served as Chief Justice of the Rajasthan High Court, previously appeared as an expert witness for Vijay Mallya in a bankruptcy case in London filed by I...