Subscribe to BBC News www.youtube.com/bbcnews Subscribe http://www.youtube.com/bbcnews Check out our website: http://www.bbc.com/news Facebook: http://www.facebook.com/bbcworldnews Twitter: http://www.twitter.com/bbcworld Instagram: http://instagram.com/bbcnews In the interview, Mr Gulen denied using his influence to start investigations into alleged corruption among senior members of Mr Erdogan's AK Party which have led to a number of police commissioners being sacked and to some of Mr Erdogan's allies being arrested. Turkey's 'second most powerful man' breaks silence