A massive explosion at a bomb-making plant in Russia has injured 79 people and damaged 180 homes in the city of Dzerzhinsk.

Officials said the factory was used to make and store bombs and other explosive devices for the Russian military. The facility, JSC Kristall Research Institute, was completely demolished by the blast.

Five people were working there at the time, but all got out safely, according to the BBC.

The injured were hurt by glass shards from windows smashed by the explosion’s shock waves.

With Post wires