Forty-year-old Kumar, who was arrested from a jungle resort in Chitwan in southern Nepal on Thursday, was handed over to a two-member CBI team on Saturday evening.

He reached New Delhi by IC-814.

CBI had registered a case against Kumar and others on Friday night on a request from the Haryana government under various sections of Indian Penal Code and Human Organ Transplant Act of 1994.

Nepalese authorities, which had on Friday announced that Kumar would be produced in court on Sunday, acceded to India's request for immediate deportation.

Kumar was arrested from Hotel Wildlife Camp in Chitwan near the Indo-Nepal border and foreign currency of Euro 145,000, USD 18,900 and an Indian bank draft of Rs 936,000 were seized from his possession.

The Indian doctor, who was believed to have carried out 500 illegal kidney transplants, claimed he was not a kidney dealer and had not committed any crime.

Nepalese police said after questioning Kumar that he had ‘confessed’ to carrying out over 300 kidney transplants in India.

Nepalese police said that Kumar 'admitted' to charging Rs 3-4 lakh for each transplant. He ‘confessed’ to looking for hospitals in Nepal through an agent Pankaj Jha, who is now absconding.

An Interpol Red Corner Notice was issued against the tainted doctor after the massive racket with inter-state and international ramifications came to light on January 24.

Nepalese media reports quoted a police official as saying that Kumar had tried to bribe the police team which went to arrest him.

Police Inspector Prakash Malla, who went to arrest Kumar, told a private television that the Indian doctor offered upto Rs 1 crore to set him free.

"Why do you arrest me, take money, how much do you need? Twenty lakh, thirty lakh, forty lakh or one crore?" Malla quoted Kumar as saying.