Let's Manga

Investigators have kept very mum about the Belgian 'manga murder' incident for the past two months; there have been no more press releases since a few days after the discovery of several body parts in a Brussels park, accompanied by two notes in romaji reading "Watashi wa Kira dess".
Belgian newspaper 'Het Belang van Limburg' devoted a page-long article to the incident in their 24/11 weekend edition (not on the paper's website but available on PressDisplay), recapping what information there is to date and revealing several tidbits of previously unknown police speculation about the case. The interesting parts, italics are direct translations from the article's original Dutch:

Manga link growing weaker
"Investigators have combed through the manga, but found no connection whatsoever with the body parts discovered."
Quite a relief to see that authorities have come to the same conclusions as Death Note fans worldwide. It's repeated later in the article: "Investigators have found no connection whatsoever with the manga Death Note". Presumably, that won't stop any sensationalist speculation. The two "Watashi wa Kira dess" notes were there, after all. But it could take away fuel from those who may believe that manga inspired the killer -if indeed there was a killer, see below. The description the article gives of Death Note's contents is also remarkably accurate.

No leads, nothing excluded just yet
The body parts have not been connected with a missing person; there are still no solid leads, and no possibility is excluded.

'Trash bag killer' link investigated
Police have investigated a possible link between this case and that of the 'trash bag murders'. Between January 1996 and July 1997, five women disappeared in the Belgian city of Mons, to the southwest of Brussels; their remains were later discovered scattered in trash bags. The case was never solved. The surgical precision with which the 'manga murder' body parts -from a male- were cut up was reminiscent of the Bergen case. No results have been released of the investigation into a possible link.

'Few leads' indeed
"There are some clues but no hard evidence relating to the perpetrator, the victim, or a possible motive. A settling of accounts in the gay scene is certainly one of the possibilities. But that theory is based mainly on the fact that the body parts were shaven clean of hair. This is something Belgian investigators have not been faced with often up until now. Certainly not with the body involved being male."
It seems far-fetched indeed to look for a connection with the 'gay scene' merely because the body parts were shaved. To my (untrained) eye, this theory makes a stronger case for the investigators having no leads than for the involvement of some 'gay scene'.

Student prank theory growing stronger
Immediately after the incident, there was some speculation that the body parts could have been placed there as a joke by medicine students of a Brussels university, but that theory was overshadowed by the possibility of a psychopath at work. The torso and legs found belonged to a white male and were in good condition, leading police to believe at first that the victim died at most 48 hours before the body parts were deposited. However, investigators now say it was entirely possible that the body parts were frozen first, preserving them and making possible the precise surgical cuts with which they were dismembered: "The psychopath thesis is not being excluded, but is considered fairly unlikely. "In that case the culprit would undoubtedly have struck again by now", investigators say. This begs the question of whether this is indeed a murder case and not a tasteless and very morbid student prank. Investigators are definitely not discounting that possibility. "The horrifying discovery was made at the start of the 2007-2008 academic year, and it is a public secret that students of the faculty of medicine like to leave a calling card at the start of a new year", investigators say." Members of the faculty of medicine of a Brussels university think it's highly unlikely that their students would be able to pull off something like this. No body parts can be removed unnoticed from the classes in which they're used, which only leaves theft from a mortuary. In that case the amputation of limbs may be within the realm of possibility, "But we still do not believe a torso could be amputated".
If the body parts were indeed originally intended for use in a classroom, that might -might- account for their being shaved, as shaving the skin clean makes it easier to cut into tissue. (Personal speculation based on entirely unscientific enquiries with a student of medicine. I'm trying to get it confirmed whether or not this is standard practice.) (Update: reportedly, it's not standard procedure.)

No witnesses found
Apart from a jogger who claimed to have seen someone lying in the grass, and whose testimony was of no help eventually, no witnesses to the incident have come forward in spite of notices urging them to do so having been placed in the park where the body was found.