LFRT
"Maldives Police Services (MPS) reported that reports of such an object were filed with the department yesterday evening around 5.30 pm and that Maldives National Defense Force (MNDF) had taken in the object.
MNDF Spokesperson Major Hussain Ali said that the object is an explosive and the MNDF Northern Area team is active in the area."
The appearance of the fire suppression bottle is superficially similar, but their are differences. The Maldive item is a mine, not a fire suppression bottle.
I'll bet that the dimensions are different as well. The mine has a circumferential weld that is not visible on the fire bottle. The angle of the "ports" (fuses) is wrong for a fire bottle. There appears to be the remains of an anchor cable attached to the mine.