The Central Bureau of Investigation will get in touch with Canadian authorities to trace the money Amit Kumar, alleged kingpin of the multi-crore kidney racket, is suspected to have kept in that country even as the Enforcement Directorate stepped in to probe financial ramifications of the case.

Kumar is accused of funneling to Canada [Images], where his family lives, part of the money he earned by undertaking surgeries of his foreign patients.

During his interrogation, CBI sources claimed that Kumar told the investigators that he used to have patients coming from a number of countries, prompting the agency to seek overseas help in establishing whether the racket had any international ramification.

The medical degree of Kumar is under scanner as he had told the CBI sleuths that he used to conduct the operations himself. The investigation agency has sought the help of medical professionals in ascertaining whether Kumar had the expertise to undertake surgeries.

The CBI has prepared a questionnaire to ascertain Kumar's knowledge of conducting specialised operations in the presence of qualified surgeons and doctors, the sources said.

CBI sources said that prima facie it seems that Kumar, who is believed to have obtained a bachelor degree in Ayurveda Medical Sciences, conducted the operations himself but the matter is being investigated.

Meanwhile, efforts have been stepped up to arrest Jeevan Rawat, Kumar's brother, as the agency is of the view that he would provide some missing links in the racket, the sources said.

CBI teams have fanned out in different states to nab Jeevan, against whom an Interpol Red Corner Notice was issued on February 1.