the information by Mustafa Kaptan that in the Grand National Assembly, there were heated discussions about the Lausanne Conference and Ali Şükrü was opposing Mustafa Kemal. Osman Ağa said he will talk to Ali Şükrü and persuade him to give up his opposition. Murder of Ali Şükrü Bey He was held responsible for the murder of deputy , who suddenly disappeared on 27 March 1923 in Ankara. After the body was found in the vicinity of Mühye village on the Çankaya ridges on 1 April, an arrest warrant was issued for him. Mustafa Kaptan took Ali Şükrü from Kuyulu Kahve to Osman Ağa's house. Rauf Orbay, in his memoirs, claimed that Mustafa Kaptan confessed Ali Şükrü was murdered in Osman Ağa's house. However, during the trial, Kaptan said he knows nothing about the murder. A witness claimed she heard sounds of begging and screaming. Osman Ağa said to her that his two men were drunk and he punished them by beating. Kaptan and other guards from Giresun were released since there wasn't enough evidence. Many have claimed that Topal Osman's men killed Ali Şükrü. The government also concluded that it was him. However, historian Ümit Doğan argues that it is not possible, because the murder is too amateur for him, and also because of the close friendship between Osman and Ali Şükrü grown during and after Battle of Sakarya. Doğan also claims that İsmail Hakkı Tekçe possibly killed him and left it on Topal Osman, as he did before in the murder of Yahya Kahya, which was stayed on Topal Osman until Tekçe's confession close to his death. Ali Şükrü's son Nuha Doruker as well claimed that it wasn't Topal Osman who killed his father. Death Topal Osman and his men, who were trapped in his house in Priest's Bound on the night of 1 April 1923, by the newly formed guard unit, clashed all night. Topal Osman was captured wounded. Later that day, under İsmail Hakkı's orders, he was executed by a shot to the head. Some claimed İsmail Hakkı cut Osman's head off but this is not true, as on the newspaper Tevhid-i Efkâr, 4 April 1923, it was written that Osman's head was leaned to back. On 2 April, at the insistence of the "Second Group", his body was dug up and hung at the gate of the parliament building (today War of Independence Museum) for exhibition