From Brian Divver, Web Developer for WXPN

On April 8, 1991, fellow Mayhem band member, Øystein ‘Euronymous’ Aarseth, found Dead [bandmate], literally dead, with slit wrists, and a shotgun wound to the head. It has been rumored that the suicide note that was found with his corpse simply read “Excuse all the blood.” (Hellhammer later elaborated that the note was a bit more detailed, including apologies for having to use the shotgun inside the house, but the knife was just too dull to finish the job). Euronymous then ran off and bought a disposable camera and took pictures of the grisly scene, which were later used for a bootleg album entitled Dawn of the Black Hearts, containing recordings from the previously mentioned Sarpsborg, Norway gig from 1990, as well as four live songs Mayhem performed with their old vocalist Maniac in 1986. Aarseth was also said to have eaten parts of Dead’s brain, and to have made necklaces out of fragments of his skull, although Aarseth himself dismissed the former of these claims in an interview. It is also rumored that pieces of his skull were mailed out to bands that Aarseth saw as “worthy”, such as the Swiss band Samael. According to Mayhem drummer Hellhammer, Morgan S. Håkansson of Marduk still has some pieces of Dead’s skull. Tony Särkkä of Abruptum also claims to have small pieces.
Taken from Wikipedia