New dELHI, Nov. 2 -- Bankim Brahmbhatt, the Indian-origin owner of US telecom companies accused of defrauding major lenders of more than $500 million, may have gone underground, reports said. The Wall Street Journal first reported the scandal, which has rocked the US private credit market and marks another breakdown in an opaque corner of the debt markets. When an HPS Investment Partners employee visited Brahmbhatt's Garden City, New York, offices in July, they were found closed, the Journal reported. On Wednesday morning, the office suite was locked and appeared vacant, with an employee at an adjacent tenant saying she hadn't seen anyone enter or leave recently. No one answered the door at a Garden City house listed as Brahmbhatt's residen...