Iran Press/ Europe: "The explosion occurred on the territory of the Zagorsk optical-mechanical plant in the area of the boiler house. The shock wave caused the windows of several houses to be blown out," the source said, adding that according to preliminary data, the cause of the explosion was not a drone.
At present, a total evacuation of the plant has been announced. The city authorities have set up a hotline.
The Zagorsk optical-mechanical plant is a leading developer and manufacturer of optical and optoelectronic devices for law enforcement, industry, and healthcare.
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