Explosion at optical-mechanical plant in Russia Injures 52

At least 52 people were injured in an explosion at an industrial plant northeast of Moscow, Russian state news agency RIA Novosti reported Wednesday.

The blast took place in the area of the boiler room at Zagorsk Optical and Mechanical Plant, in the town of Sergiev Posad, state news agency TASS reported. The plant is a developer and manufacturer for optical and optoelectronic devices for the Russian military, law enforcement agencies, industry and healthcare.