I seemed to have been proved partially right.
The fire was first reported in a lower cargo area where seafaring tanks and landing craft are parked. It appears to have started in a spot where cardboard boxes, rags and other ship maintenance supplies were being stored, Sobeck said.
A fire suppression system had been turned off because it was being worked on as part of the ongoing maintenance. The system uses Halon, a liquefied, compressed gas that disrupts a fire and stops its spread by cutting off its oxygen.
https://www.msn.com/en-gb/news/polit...ip/ar-BB16HHbk