On September 12, 1996, López mailed a letter bomb rigged with sulfuric acid to Björk’s residence in London, then returned home, recorded a final video diary explaining his motivations, and ended it filming his suicide by gunshot. Hollywood police found his body and the videos four days after his death; they contacted the Metropolitan Police, who intercepted the package. Björk was unharmed.
Those homemade manifestos were unsettling as fuck.
On a related note, there was a horror movie several years ago that took inspiration from this called Be My Cat.
Interesting movie. Seems to be alright according to the reviews.