The death toll from an explosion and fire at the Elastic factory in Russia's Ryazan region has risen - 16, according to a spokeswoman for the ministry of emergency situations on Friday.
Earlier in the day, the spokesperson stated that 12 individuals were killed in the tragedy.
The plant in the village of Lesnoye, around 300 kilometres (180 miles) from Moscow, says on its website that it produces industrial explosives.
The emergencies ministry said it first received a report that a fire had broken out at the plant at 08:22 local time.
The head of the local administration earlier told the TASS news agency that the 17 people were inside the plant's workshop at the time of the fire. The ministry said it had deployed more than 170 rescuers to the area.