The Prosecutor General's Office of Georgia has published its final conclusion on the causes of death of former Prime Minister Zurab Zhvania. This was stated on Friday at a press conference in Tbilisi by Deputy Prosecutor General of Georgia Giorgi Janashia, reports RIA "Novosti". \n \n"According to data from the US Federal Bureau of Investigation obtained as a result of biological testing of samples from Zurab Zhvania's body, 72% carboxyhemoglobin was found in the blood of the former Prime Minister of Georgia, and 74% of the same substance in the blood of his friend Raul Yusupov," Janashia stated. \n \nAccording to him, according to the FBI experiment data, the gas heater in the apartment where Zhvania died was installed without compliance with the necessary safety rules. "During operation of the gas heater, within one hour the oxygen level in the apartment dropped to 18.4%. According to US standards, an oxygen level in an apartment below 19.5% is already life-threatening," Janashia said. \n \nThe conclusion states that the decrease in oxygen level was caused by the lack of ventilation and the release of carbon monoxide, which caused death. No narcotic substances or alcohol were found in the blood of Zhvania and Yusupov. \n \nRecall that former Prime Minister of Georgia Zurab Zhvania and his friend Raul Yusupov died on February 3, 2005.