Russians secretly infiltrate Kupjansk through underground passage

Prolonged clashes over Kupyansk, a city in northeastern Ukraine, have persisted. Russian forces have gained ground deceptively with a stratagem.

, and ASMedia

2025 September 18 . 7:54 PM

2 min read

Infiltration Report: Russians suspected of using underground passageway to reach Kupjansk

Russians secretly infiltrate Kupjansk through underground passage

In the eastern Ukrainian region of Kharkiv, the town of Kupjansk, a crucial transport hub situated on the Oskil River, is currently witnessing intensified fighting. The General Staff in Kyiv has confirmed that the exit of the fourth pipeline in Kupjansk is under the control of Ukrainian forces, but three of the four underground pipelines in the area are either damaged or filled with water.

Kupjansk, which serves as a barrier against the advance of Russian troops, has been a focal point in the ongoing conflict in the region. The Russian military is reportedly using an underground tunnel to reinforce its bridgehead on the western bank of the Oskil River. This tunnel, constructed and used by Russian troops to advance into the city during the conflict, does not lead directly into the city.

The military-affiliated blog 'Deepstate' has reported this infiltration, but the General Staff in Kyiv has refuted reports of an immediate threat to the city upon learning of the tunnel. Despite initial concerns, the situation in Kyiv, the capital city, is currently under control, according to the General Staff's announcement on Facebook.

It's important to note that Kupjansk is not located in Kyiv, contrary to the heading suggesting otherwise. The Oskil River, serving as a natural barrier, has so far been effective in hindering the advance of Russian troops.

In a surprising move last summer, Ukrainian forces had carried the war onto the territory of the aggressor for the first time, holding a larger area under their control for months. However, the Russian military has breached the river at certain points, suggesting a persistent threat.

Previously, Russian troops used a similar tactic to retake the town of Sudchna in the Russian region of Kursk at the beginning of the year. This latest development in Kupjansk underscores the ongoing tension and the complex nature of the conflict in the region.