As expected this scandal is getting more and more widespread with who is getting involved, what club, etc. I'm going to be impartial and just state what the 'facts' are according to the media in Turkey thus far, and we should contribute here from hereon.
My biggest concern is that this is a league wide issue, the good/bad prospect for our league is at stake, the issue is not necessarily the individuals, but the repercussions. Razzerian had a good post in the Fenerbahce section about the ramifications of this whole thing, maybe a mod can put that in here.
As far as I can gather here is the rundown on everything so far.
Aziz Yildirim has been accused of playing a hand in match fixing in the league this season, specifically in the matches against Sivasspor in the final game, Karabukspor, and apparently the reason why Sezer Ozturk played so well against Trabzonspor. Vice President Şekip Mosturoglu and board member Ilhan Eskioglu were also detained for questioning.
New Fenerbahce transfers Emenike (Karabuk) and Sezer (Eskisehirspor) are also questioned.
Bulent Uygun, Umit Karan are involved from Eskisehirspor
Mecnun Otyakmaz, Korcan Çelikay from Sivasspor
Serdar Kulbilge and Serkan Calik from Genclerbirligi
Serdar Adali from Besiktas 'could' be involved starting tomorrow for contacting Ibrahim Akin before the Cup Final, in which Adali as confirmed his contact with Akin from Hurriyet's interview here (but not the time of contact):
http://www.hurriyet.com.tr/spor/futbol/18166547.asp?gid=362
Search warrants have been issued, and searches have been done at Besiktas, Trabzonspor, Fenerbahce, and Sivasspor headquarters.
Giresunspor's president Omer Ulku and former president Olgun Peker
Diyarbakırspor former president Abdurrahman Yakut
Mersin İdmanyurdu Vice President Besir Acar
So far about 50 people have been brought into questioning and the number has been tipped to go into the hundreds.
http://www.htspor.com/super_lig/haber/645122-bircok-flas-isim-daha-gozaltina-alinabilir
"Bu sabah itibariyle emniyetten aldığımız bilgiye göre; çok uzun süre devam eden bir hazırlık sonucunda sadece F.Bahçe değil; Trabzonspor, Beşiktaş ve diğer birçok küçük kulübün de aralarında bulunduğu kulüplere operasyonun söz konusu"
Is the latest news that came out about 30 minutes ago as it is morning in Turkiye as I write this post. This case seems very comprehensive. It's going to spread as well.