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Ukraine intelligence alleges hidden Russian biolab site

HUR said the site is guarded by air defenses and linked it to a 2026 cattle disease outbreak in Russia.

  • On Friday, Defense Intelligence of Ukraine reported that Russia operates a secret military biological research complex on Lisiy Island in the Vyshny Volochyok Reservoir, roughly 120 km northwest of Tver.
  • Russian President Vladimir Putin personally ordered the complex as a project of 'special importance' to 'ensure Russia's defense capability and security.' Formally, the site operates under the Federal Medical-Biological Agency .
  • The site allegedly conducts research on dangerous viruses and pathogens under veterinary cover, while Russian Defense Minister Andrei Belousov oversees security including air defense systems protecting the island.
  • Vyshny Volochyok Reservoir supplies drinking water to nearby communities, raising contamination concerns. Since 2023, waters surrounding the facility have been designated a 'specially protected territory of regional significance.'
  • HUR linked the site to a 2026 cattle disease outbreak, though independent reports place that event in Siberia, roughly 2,500 km from Tver Oblast. HUR provided no evidence for the claims, and Russian authorities have not commented.
Insights by Ground AI

17 Articles

Right

According to the Main Intelligence Directorate of the Ukrainian Ministry of Defense (HUR), the complex was commissioned by Vladimir Putin and was intended to fulfill tasks related to Russia's security and defense capabilities. Officially, veterinary and physiological research is conducted there, but Ukrainian intelligence claims that the laboratories may be conducting experiments with dangerous viruses and other pathogens for the Russian armed f…

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Center

The Ukrainian intelligence services claim that Russia has built a secret military complex of biological laboratories on Lisiy Island, in the Tver region. Officially named Centre for Physiology...

Lean Left

They created a complex of biological laboratories on the island: the GUR said that the Russian Federation is experimenting with viruses in the middle of the reservoir, the GUR said that Russia has created a secret complex on the island in the Tver region for experiments with dangerous pathogens. Intelligence warned of the risk of reservoir contamination and epidemics.

·Kyiv, Ukraine
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Center

Russia has built a secret military complex consisting of biological laboratories on Lisiy Island, in the Tver region, where it conducts experiments with dangerous viruses in the interest of its armed forces, according to the Ukrainian Defence Information Service (HUR), reports RBC-Ukraine.

·Bucharest, Romania
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Defence Blog broke the news in United States on Friday, August 21, 2026.
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