In June 2011, the Royal Institute of British Architects (RIBA) was criticized for hosting a lecture by Richard Gage, president of Architects & Engineers for 9/11 Truth. Rick Bell, the director of the American Institute of Architects (AIA) New York chapter, who was a witness to the 9/11 attacks, said that "no amount of money" would persuade him to allow the group to talk at his headquarters and said that Gage lacks credibility among the professional community. Eugine Kohn, former spokesperson for the AIA, said Gage's theories were "ridiculous", "were no explosives planted", and "[the buildings were definitely brought down by the planes". The decision to host the event was also criticized by the former president of RIBA and the founding president of the AIA's United Kingdom chapter. Gage has been warned by the AIA against giving a false impression that he has a relationship with it. A July 2012 article in the AIA's magazine criticized Gage for continuing to intimate that he has an association with the organization, and claimed that there were no architects at an Architects and Engineers for 9/11 Truth screening held in an AIA boardroom. RIBA released a statement saying the perception that it endorses events held in its buildings is "regrettable", and said it would review policy on "private hire" of its buildings. Anthony Summers and Robbyn Swan offer scathing criticism of many of the above theories in "The Eleventh Day", their 2011 investigation of the attacks.