Investigations concerning the nationalist underground Ergenekon network have led to suspicions concerning Ergenekon's involvement in Dink's assassination.[27] Folder 441 of the Ergenekon indictment's annex contains evidence that Dink's entire family was targeted. Staff colonel Ferhat Özsoy allegedly pressured chief master sergeant Murat Şahan into carrying out the assassination, offering him 300,000 Lira in reward. Şahan, who was undergoing psychiatric treatment as a result of being 70,000 Lira in debt, resisted and filed a complaint from a military hospital, where he was forced to undergo an examination.[28]