New Delhi: Four Swiss bank accounts of beleaguered diamantaire Nirav Modi, the main accused in the USD 2-billion PNB fraud case, and his sister have been "frozen" by authorities in Switzerland as part of the criminal money laundering probe being conducted against them in India, official sources said.

They said the accounts, at present, have deposits totalling Rs 283.16 crore and they have been frozen on the request of the Enforcement Directorate (ED) after it informed Switzerland authorities that the money kept in them are "proceeds of crime" of a bank fraud perpetrated by the duo.