MOSCOW, July 2. /TASS/. Fourteen submariners died in a fire that broke out in a submersible vehicle in Russian waters on July 1, the Defense Ministry said in a statement released on Tuesday.

"On July 1, fourteen submariners - sailors died in Russian territorial waters as a result of inhaling combustion products aboard a research submersible vehicle designated for studying the seafloor and the bottom of the World Ocean in the interests of the Russian Navy after a fire broke out during bathymetric measurements," the statement says.

The fire was extinguished "thanks to the self-sacrificing actions of the team," the statement says.

The submersible is currently staying at the Severomorsk naval base.

"The causes of the incident are being investigated. The Navy’s commander-in-chief is carrying out the investigation," the statement says.