A day after former US Ambassador Harry Barnes denied having received or written any 1995 note that hinted at the presence of a ‘mole’ in the Prime Minister’s Office, Thomas Graham, the second person named by Jaswant Singh as the “sender” of the note, told The Indian Express: “I don’t have a clue what this all about.”

Meanwhile, the spokesperson for the American Embassy in New Delhi, reacting to the note mentioned by Jaswant Singh, said: “The letter is not official US Government correspondence. The US was not asked to examine this document before its publication. Had we been asked, we would have pointed out that it’s a poor imitation of official US government correspondence”.

Speaking from New York, Graham, now an Associate Scientist in the Non-Proliferation Bureau of the Brookhaven National Laboratory, said: “I don’t have memory of this particular document that is floating around”.

Graham said that in 1995 he was working at the Rockefeller Foundation and was in touch with Barnes and that “I have worked on the Indian nuclear programme for the last 30 years.” But he said that for a long time he had “not been writing about this issue” and that he would need to refresh his memory by delving into his basement full of documents “since it is an episode almost 11 years old”.

Asked if he had visited India in 1995, Graham said he would need to check his travel logs, but added that he had “done a lot of travelling in India, but not since 9/11”.