The CBI has sent Letters Rogatory to three countries, including Canada [Images], to gather more information about business and stashing of money by Amit Kumar, alleged kingpin of the multi-crore rupee kidney transplant racket.

"We have sent the Letters Rogatory to Canada, Greece and Turkey to get more information about the accused," CBI's special director M L Sharma said.

The LRs from the designated court and later routed through External Affairs Ministry to these countries seek details about the funds stashed by Kumar and details about his patients who came from countries like Greece and Turkey. The CBI suspects Kumar had stashed a part of his earnings in Canada. His family is also believed to be residing in that country.

Appreciating Canada's help in the case, Sharma said the country is "cooperating very well" with the Indian probe agency.

"The Canadian government's help has been very good. This will help in restricting Kumar from selling his properties and meddling with his bank accounts," he added.

The CBI wants to know the name of the patients from Turkey and Greece who had come for kidney transplantation to Kumar and the mode of payment by them, he said.

The Special Director, who is personally monitoring the case, said the CBI had adopted more of a focused approach in this particular case and was concentrating on his illegal operations in Gurgaon at present.