Russia's Defense Ministry says a fire on one of its deep-sea research submersibles has killed 14 crew members.
The ministry said on July 2 that the tragedy took place the previous day as the vessel was carrying out a survey in Russian territorial waters, Radio Free Europe / Radio Liberty (RFE/RL) said.
A Defense Ministry statement said that the sailors died as a result of inhaling combustible fumes aboard the research vessel, which was conducting biometric measurements on the floor of the ocean.
The submersible is now at a navy base in the northwestern city of Severomorsk near Murmansk on the Barents Sea, officials said.
An investigation has been launched.