HUR reports Russian lab on Lisiy Island may conduct biological weapons research

What happened

Ukraine’s military intelligence agency HUR reports that a laboratory complex on Russia’s isolated Lisiy Island in Tver Oblast may be conducting research related to biological weapons. Andrii Cherniak, a HUR representative, told the Kyiv Post that the facility officially operates as the civilian Center for Experimental Physiology but is believed to work in the interests of the Russian Defense Ministry.

Outside Brief is treating this as a source-led account. Any disputed responsibility, casualty figure, battlefield claim or single-source assertion should be treated as unconfirmed/hearsay unless confirmed by another reliable source or a named official. According to the HUR claim, the lab is equipped to handle dangerous pathogens and chemical substances. The site is reportedly guarded by Russia’s Federal Security Service and Federal Protective Service, with air defense systems and electronic warfare equipment deployed around it. Access to the surrounding waters has been restricted to visitors since 2023.

Cherniak said the complex was originally built in 1938 to study animal diseases but fell into disrepair after the Soviet Union’s collapse. Reconstruction began in 2022 on orders from Vladimir Putin, replacing old structures with modern laboratories designed for enhanced safeguards and designated as critical to Russia’s defense capacity despite its civilian designation.

Known from the source

• The Center for Experimental Physiology is located on Lisiy Island in Russia’s Tver Oblast.
• The facility was built in 1938 and originally studied animal diseases.
• The site fell into disrepair post-Soviet Union and underwent reconstruction starting in 2022.
• The Russian Federal Medical-Biological Agency began recruiting personnel in May to work with pathogenic biological agents reportedly classified in Groups I-IV.
• The complex is officially civilian but reportedly heavily guarded by Russia’s Federal Security Service and Federal Protective Service.

What remains unclear

HUR also linked the Lisiy Island facility’s restoration to concurrent upgrades at the Russian Defense Ministry’s 48th Central Research Institute near Moscow. The two projects were apparently funded under the same program. Furthermore, HUR cites recruitment efforts by Russia’s Federal Medical-Biological Agency in May for lab assistants to work with highly pathogenic biological agents, classified by Russia in Groups I-IV, with Group I agents noted as particularly dangerous and untreatable infections.

What remains unclear: Confirm whether the central claim is corroborated; until then treat it as unconfirmed/hearsay. The claim that the lab is conducting biological weapons research for the Russian Defense Ministry. The precise relationship between the lab and the Russian Defense Ministry, including the defense minister’s role. The connection and coordination of funding between Lisiy Island lab and the 48th Central Research Institute near Moscow.

Evidence note

Outside Brief has kept this brief source-led and attributed. Claims should be read alongside the original source linked below.

Original source: New Voice Ukraine. Open the source.