This was reported on Twitter Print Service of the Holy See.
#PopeFrancis grieves for families of victims https://t.co/ZAEukndXM3
- Vatican News (@VaticanNews) July 4, 2019So, they noted that the pontiff expresses deep condolences to the families of the dead sailors, as well as to all those who were affected by the tragedy that occurred earlier.
On July 1, a fire broke out at a research deep-water apparatus operating in Russian territorial waters.
As a result of the accident, 14 submariners were killed.
The main cause of the incident is considered to be a fire in the battery compartment of the device.