Rohan Gunaratna

In 2003, Gunaratna claimed that Al-Qaeda commander Riduan Isamuddin (alias Hambali) regularly visited Australia and plotted to fly planes into the British Houses of Parliament; these claims were dismissed as baseless by the ASIO.[11][12] Commenting on one of his books, the Pacific Journalism Review said in its review that "his writing here on Indonesia reveals a remarkably narrow selection of sources, a profound lack of knowledge, and a flawed understanding of the history of the Indonesian armed forces and of their intelligence operates".[13] Australian journalist and commentator on intelligence issues Brian Toohey has called him a "self-proclaimed expert".[14] He has also made false claims to be a "principal investigator" at the UN's Terrorism Prevention Branch. In reality, he has only spoken at a seminar organized by the Australian Parliamentary Library, testified at a Congressional hearing on terrorism and delivered a research paper at a conference organized by the UN's Department for Disarmament Affairs.[14]

In 2004, New Zealand journalist Martin Bright described Gunaratna as “the least reliable of the experts on bin Laden”.[11] His claims to the New Zealand Herald that "sympathisers and supporters of various terrorist groups were in New Zealand” and to have seen their fundraising leaflets were also dismissed by New Zealand's Financial Intelligence Unit.[11]

In a February 2011 article in Lakbima News, Gunaratna claimed that the Canadian Tamil Congress (CTC) was a front for the Liberation Tigers of Tamil Eelam.[15] The CTC sued Gunaratna, and on 21 January 2014, the Ontario Superior Court of Justice ruled against Gunaratna, ordering home to pay the CTC damages of $37,000, and costs of $16,000.[16][17] In his ruling judge Stephen E. Firestone stated that Gunaratna's claims were unequivocally and incontrovertibly "false and untrue".[18][19]