Does anyone have
any idea where Newsweek is getting this information?
"Police speculate that the killer may have been startled to find two women in the bed and that Goncalves may have put up a fight,
during which the killer was slightly injured, and dropped the knife sheath in the confusion."
The murder weapon has never been found but police are relying on other evidence
www.newsweek.com
ETA: I wonder if this is something they pulled out of their notes from the very beginning of the case before the gag order. Because there's been no indication that his DNA was found anywhere. IIRC I think Taylor made a stink about that. Maybe it's as simple as something like this? If so, it's misleading of them to say this though imo.