Noble's endorsement of the Belarusian state investigation into the April 2011 bomb explosion in the Minsk Metro was questioned in 2012 by BBC journalist John Sweeney. In a May 2011 press conference in Minsk, Noble praised the "high professionalism" of the police, Ministry of Internal Affairs officials, and other government officials for quickly completing the investigation. According to Sweeney, Noble endorsed the CCTV footage used in the investigation, the credibility of which was later questioned. Interpol said the BBC documentary was based on "biased speculation".