Acc. to that edit 21 Oct 2008, even before the first trial, this was the state of the evidence against the three - the edit on the Italian-version of Wikipedia was an unsourced "opinion" as to what the case was.
Against Lumumba:
- had been arrested because of Knox's testimony (note: no mention as to where that "testimony" came from)
- Knox had mis-accused because of taking narcotics
- Lumumba released, charges dropped
Biggest difficulty of the investigation is establishing exact role of the participants, and potentially others. Reconstruction based on scientific polic expertise and inconsistencies of stories. Very little has been added to this which is trustworthy.
Against Sollecito
- His kitchen knife with Kercher's DNA, although defence contests it as damaged and insufficient.
- Presence of Meredith's blood on knife admitted to by Sollecito
- his passion for knives and violent (sexual) manga comics
- no alibi, he says he'd been with Amanda but she says she does not remember being with him
- the shoeprint in Meredith's room is compatible with Sollecito
Against Knox
- she twice changed her story, and inbetween the changes wrote that she cannot trust her memory; possible her involvement was because of a narcotics-induced confused state
- She'd lied about not being in Meredith's room, her shoeprint was found
- Her DNA was on the kitchen knife handle
- In bathroom Meredith's blood contained Amanda's DNA (note: even early on, they were not talking about "mixed blood"!)
- Amanda's sexual fantasies revealed in her writings of a girl killed with a knife during sex
- The Harry Potter book Knox claimed to be reading at Raffaele's was, in fact, at the cottage
Against Guede
- He admits to being at cottage during the crime
- His faeces in the toilet, although reconstructing why he'd use the toilet in those circumstances was "not easy"
- His DNA found on bra and victim, Rudy admits to intercourse with victim
- Guede has provided prosecution only with lies, falsehoods and "highly unlikely fantasy"
- Rudy's ID'ing of the other assassins does not match any of the other suspects.
- Rudy fled to Germany following the murder
Overall clues to the suspects:
- Crimescene heavily altered, body moved and stripped after the fact
- on bed are "various pressures not attributable to Guede"
- window glass was broken maybe to simulate a break-in
- Moving the body suggests more than one person intervened after the crime.
It's interesting reading this, there is no citation and it seems almost certain that because this is Oct 2008, all this must have been because of leakage from the prosecution itself.