Moscow: The death toll from a fire that broke out Tuesday at the Amur Gas Chemical Complex in Russia's Far East has risen to 15, the company said Thursday.

According to Anadolu Agency, the company has begun emergency recovery operations at the site in coordination with the Russian Emergency Situations Ministry. The company stated on Telegram that search and rescue operations have concluded, confirming 15 deaths, including one Russian citizen and 14 foreign nationals, all contractor employees.

The statement also indicated that 39 people continue to receive medical treatment, with some being transported to Moscow for further care. Continuous air quality monitoring is ongoing at the plant site, nearby areas, and communities such as Svobodny. No harmful substance concentrations have exceeded permissible levels.

Earlier, it was reported that the fire at the site, near the Russian-Chinese border, had been extinguished, and residual industrial gases were being managed by specialists. During search and rescue operations, the bodies of four Chinese workers were discovered, confirming a total of seven deaths, including a Russian and six Chinese citizens.

The fire reportedly originated in an auxiliary section of the facility's pyrolysis unit, according to preliminary information provided by the company. Russia's Investigative Committee is investigating the incident for a possible 'violation of safety requirements' and is working to determine the exact cause.

The Amur Gas Chemical Complex, a joint venture between Russian petrochemicals company SIBUR and Chinese oil and gas enterprise Sinopec, is positioned as one of the world's largest polyolefin production sites. The complex is yet to commence production.