An explosion occurred at a factory producing ammunition for the Russian military, resulting in the deaths of three people and injuries to five others, 24NewsHD TV channel reported on Sunday.
According to Russian authorities, one of the deceased was a woman. Officials added that two of the injured victims remain in critical condition at the hospital.
The cause of the blast is yet to be determined, and authorities are conducting investigations into the incident.
The factory reportedly manufactures explosives and munitions for use by the Russian armed forces.
Safety concerns around military production facilities in Russia have intensified in recent months amid rising demand and pressure on defence infrastructure.