State media reports that a nitrogen tank explosion triggered a blast and heavy smoke at the Tabriz refinery in Iran

Iranian firefighters tackle the flames at the Tondguyan oil refinery in Tehran. Vahid Ahmadi/Tasnim News/AFP/Getty Images

Nitrogen tank explosion

A nitrogen tank explosion triggered a blast and plumes of smoke at Iran’s northwestern Tabriz refinery, News.Az informs via Tansim.

The incident caused no casualties, and operations at the facility remain unaffected.

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