[Erlangolem]

Everything in the article suggests that it’s either moronic clickbait (FB tier) or disinformation.

Implausible amounts of Californium, nonsense about red mercury, the bit about Al... it reeks.

[Thorondor]

I'm also pretty skeptical about this story to be honest, but FWIW it was repeated by the BBC. http://www.bbc.com/news/world-europe-43463195 The link I submitted is the nearest I can find to an original source.

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.

[Erlangolem]

1.4 grams would be more than 4 years total world production.