Struffert says the evidence found in the field where Denison's body was discovered last month is critical to the investigation.
Police believe both pairs may have been taken from the home where Denison last was seen when she was abducted Jan. 20 on the edge of the campus of the University of Nevada, Reno.
http://www.kolotv.com/news/headlines/16341236.html
This is very curious to me. If the women were locked into the bedroom asleep...obviously, that leaves the other female and two male roomates' rooms empty...but I rather thought they were locked, too. I don't see the girls leaving their worn underwear laying around in the common area, but I guess they could have a laundry room or similar near the kitchen where a laundry basket could have been.
They must have already inquired with the roomates as to the origin of the PP thong? If someone in that home owned the PP thong, they would know. If one of the males' had a possible lover that owned/left them, they would know.
Also, incorrectly...They stated that:
RENO, Nev. (AP) - Reno police say a second pair of women's panties found with Brianna Denison's body had DNA belonging to her,
a woman who lived with her and the serial rapist they believe strangled the 19-year-old college student.
It is common knowledge that Brianna did not live there. This indicates the new pair they are talking about has their DNA on it...but not the PP thong.
Being intertwined, it does sound more like he used them to strangle her.