In May 2018, the BBC reported that the Udorn Royal Thai Air Force Base was the location of the black site used to interrogate Abu Zubaydah, a 31-year-old Saudi-born Palestinian, believed to be one of Osama Bin Laden's top lieutenants. In December 2014 the United States Senate Select Committee on Intelligence (SSCI) published an executive summary of a secret 6,000 page report on CIA techniques. The report alleges that at least eight Thai senior officials knew of the secret site. The site was closed in December 2002. Thailand has denied the existence of the site while the US government has neither confirmed or denied its existence.