Indian officials were told there was no realistic possibility of the Pakistani-American being handed over since the sentence could range between 200 and 300 years  of imprisonment.

The US stand was conveyed to the Indian investigators by the Federal Bureau of Investigation(FBI) officials during their regular interaction to discuss the case related to Headley,  whose links with the banned Lashker-e-Taiba (LeT) were being probed by the two countries, official sources said here today.

The polite turning down of the Indian request for extradition of 49-year-old Headley, arrested in Chicago on October three last, came in the wake of repeated statements including that by Union Home Secretary G K Pilai that India would press for the extradition of the terror suspect.

Pillai had said earlier that India will seek his extradition after completing investigation by January next year into his links with the Mumbai terror attacks.

However, FBI seems to be in no mood to hand over him to India and very politely conveyed that he could be handed over once the sentence ranging to 300 years is completed. He can also be sentenced to death, the sources said.

Headley has been charged by the FBI for 26/11 attacks in Mumbai also on December seven. He is alleged to have conducted reconnaissance of all targets attacked by Lashker militants on November 26 last year besides drawing the routemap for their landing on the Mumbai coast.