Article mentions seizure of red mercury (https://en.wikipedia.org/wiki/Red_mercury) which suggests that either the writer is incredibly misinformed or this is an intentional disinfo piece.
Implausible amounts of Californium, nonsense about red mercury, the bit about Al... it reeks.
The truth is probably either that a smaller amount of californium was seized (possibly 1.4g) or the californium was part of a 1.4kg assembly including some other elements.