Tashkent, Uzbekistan (UzDaily.com) — Traces of carboxyhemoglobin have been detected in the blood of Russian journalist Inessa Papernaya and her companion, according to a statement from the General Prosecutor's Office.

In October, the bodies of Inessa Papernaya and her companion were discovered in a Tashkent hotel, showing signs of poisoning by an unidentified substance. In a neighboring room, the body of an Uzbek citizen was also found.

Preliminary results from forensic chemical analysis revealed the presence of carboxyhemoglobin (59%), ethyl alcohol (1.36%), and hydrogen sulfide in Papernaya's blood and internal organs.

Similar findings were reported for her companion, with traces of carboxyhemoglobin and hydrogen sulfide detected in his blood and organs.

Investigative actions and forensic examinations are ongoing.

Carboxyhemoglobin is a compound formed when carbon monoxide binds with hemoglobin, typically resulting from inhaling high concentrations of carbon monoxide.