During the investigation, he found out patient information of relatives of Land Forces Commander Yaşar Büyükanıt was revealed by a Gülen movement member.
Temizöz was detained on 23 March 2009 for the "perpetrator unknown" murders after testimonies of two secret witnesses, "Tükenmez Kalem" (real name: Fırat Altın) and "Sokak Lambası" (real name: Hıdır Altuğ),[4] and an open witness, Mehmet Nuri Binzet (who was 13 years old at the time of alleged murders).
[5] All three later withdrew their testimonies, with Binzet saying that he hated his family for making him a village guard and Colonel Cemal Temizöz for giving consent" and that he heard many incidents from different people and threw them on Kamil Atağ and his son as well as Cemal Temizöz.
[7] Temizöz was released on 12 September 2014[8] and received an amnesty for the death well case on 5 November 2015.
[12] He was sentenced to 18 years in prison on 21 September 2012, but received an amnesty for the Sledgehammer case on 31 March 2015.