KYIV, Ukraine — Russian drone strikes hit parts of the gas transport system in Ukraine’s southern Odesa region on Wednesday, Ukrainian officials said, adding to months of intensified attacks on the country’s energy network.

Deputy Energy Minister Mykola Kolisnyk told Ukrainian television that the strikes targeted facilities within the region’s gas transmission system, an area that includes pipelines used to carry U.S. liquefied natural gas imported through Greece. He did not specify which installations were damaged. Data from Ukraine’s gas transit operator showed planned volumes on the Transbalkan route remained largely unchanged, Reuters reported.

Kolisnyk said repeated Russian attacks on power and gas infrastructure have complicated the delivery of electricity nationwide, prompting Kyiv to impose additional usage restrictions this week. Rolling blackouts have hit many regions, and on Tuesday roughly half of Kyiv residents were without power simultaneously.

Ukraine has lost more than half of its domestic gas production to strikes and expects to import over 4 billion cubic meters this winter to meet demand, according to the head of the National Bank.

On Wednesday, scheduled transport volumes on the Transbalkan route — commonly used for LNG deliveries — stood at 2.16 million cubic meters, only slightly below Tuesday’s 2.18 million. One company using the corridor told Reuters that pumping rates would remain steady.

In Russia, Moscow Mayor Sergei Sobyanin said air defenses shot down a drone approaching the capital Wednesday afternoon. He did not report damage or injuries.

Separately, Ukrainian President Volodymyr Zelenskiy said intelligence assessments indicate China is taking steps to expand cooperation with Russia, including in military-industrial sectors. He wrote on X that partner intelligence agencies have reported similar findings.