Explosions were reported overnight in the Russian cities of Ulyanovsk and Perm, with local and Ukrainian media accounts saying the blasts occurred at a factory in Ulyanovsk and an oil refinery in Perm.

The reports, carried by the Ukrainian outlet ukranews.com, remain unconfirmed by Russian regional authorities or plant operators as of publication. No official statement on damage, injuries, or cause has been released for either site. Editors should treat all operational detail below as reported, not verified.

What do the reports say?

The accounts describe two separate incidents:

• An explosion at a factory in Ulyanovsk, an industrial city on the Volga river roughly 700 km east of Moscow.
• An explosion at an oil refinery in Perm, the administrative centre of the Perm Krai region in the Urals and a longstanding centre of Russian refining and potash mining.

Ulyana, the reporting does not specify whether the Perm facility is one of the region's major refineries or a smaller processing site. Perm Krai hosts significant refining capacity tied to the Urals crude stream, and any confirmed strike on a refinery there would join a series of similar incidents at Russian fuel-producing assets over the past two years of the war in Ukraine.

Neither report names a responsible party. Kyiv generally does not comment on individual strikes deep inside Russia, and Russian officials have in previous similar cases attributed blasts to drone debris, technical faults, or fires of unspecified origin.

Why does a Perm refinery incident matter?

Refining capacity has become a recurring pressure point in the conflict. Ukrainian long-range drone attacks have previously knocked out or degraded units at multiple Russian refineries, temporarily removing hundreds of thousands of barrels per day of throughput and forcing diesel and gasoline export restrictions from Moscow at various points.

If confirmed at a major Perm facility, the incident would extend that pattern east of the Urals, deeper into Russia's industrial interior than many earlier strikes, which concentrated on plants in European Russia and the Volga region.

For downstream watchers, the immediate questions are conventional:

• Which units, if any, were damaged — crude distillation, hydrotreating, or secondary conversion capacity.
• Whether the plant shut down entirely or reduced runs.
• How quickly repairs and restart can proceed, given Western sanctions on refinery equipment and catalyst suppliers.

None of those answers is yet available for the reported Perm incident.

What is the situation in Ulyanovsk?

The Ulyanovsk report describes an explosion at a factory without identifying the enterprise. The city hosts machine-building, aviation-component, and ammunition-linked industrial plants, but the source material does not specify which facility was involved.

There is no confirmed information on casualties, fire, or damage extent. Regional emergency services have not published the kind of statement that would allow a damage assessment.

What is the watch item?

Verification. Watch for three signals over the next 24-48 hours: an official statement or silence from Perm Krai authorities, satellite imagery of the refinery site, and any move by the plant's operator to declare force majeure or adjust processing schedules. Absent those, the reports stay in the unconfirmed category, and any throughput-loss figures circulating on social media should be treated as speculation rather than sourced data.