Rumors involving Adachi schoolgirl murder and Iijima Ai?

(Sorry if this is the wrong category; I couldn't find a better category.)

Edit to add: I am sure it is groundless, but I would like to know what the rumor is...

Edit: nobody got TD's from me. I appreciate any info in this particular rumor.

I hadn't heard the rumor until recently myself, but it has circulated ever since she wrote her book (at least). I followed her career during a lengthy stay in Japan through the 1990's, but lost touch when I left in 2000. I didn't even know she had died in 2009 until I found out randomly last weekend. I was what you could call a 'fan' of her television work, and was saddened by the lonely circumstance of her death. So, I got curious about what happened, and looked more deeply.

For the curious:

I've spent the last 2 days looking through Japanese websites (there are a great many on this topic), trying to piece together the story. A lot of it is hearsay, and a lot of it is very murky because everyone concerned had underworld ties (including Iijima), and the underworld doesn't air their dirty laundry publicly, although some are apparently not shy about getting into anonymous quarrels on the internet.

The basic rumor apparenty is that after running away from home, 16-17 year-old

Iijima (Matsue Okubo, at the time) became involved with a Yankee motorcycle gang that was comprised of several of the murderers and other assorted local hoodlums in Adachi ward, shortly before the murder took place. (It is also alleged that comedian Smiley Kikuchi was part of this gang; he sought police assistance a few years ago, after receiving death threats on his website) No source I examined claimed that Iijima Ai directly participated in or even witnessed the captivity of Junko Furuta; however, all sources claim there is no way she wouldn't have known that it was occuring, given her central position in the gang. A cryptic, somewhat ambiguous blog post written by Iijima herself on her blog (which is still available on the internet) in 2007 even seems to confirm this, while also stating she knew nothing further about the matter. It is claimed that up to 100 people knew about it while it was happening, from the lead killer's parents on down.

Many sources also took a much dimmer

view of the victim than the Japanese media did, suggesting that she had gotten what she deserved... (Nobody deserves what happened to her; which was depraved, but that's what they said) She ran in the same gang circles, and her murder may have been a revenge killing.

I don't necessarily believe any of this; the internet is full of liars. However, it does seem very plausible that Iijima Ai did indeed know some of the participants at the time of the murders. Whatever else she knew, she took to her grave.

I'll close the question now, I found what I needed. Thank you!