An Indian-American former McKinsey consultant has told a US court that he "committed a crime" by passing on secret information to convicted hedge fund founder Raj Rajaratnam after the Sri Lankan "chided and taunted" him for not knowing enough about what was happening at various firms. 

Anil Kumar, 53, is a government witness in the insider trading trial of his mentor and fellow Indian native and ex-Goldman Sachs director Rajat Gupta. Kumar, an IIT Mumbai and Wharton Business School alumnus, has pleaded guilty to criminal charges of passing inside information to Rajaratnam and had testfied at the Galleon founder's trial last year.