On Sunday, the Chauncey Bailey Project will report that Yusuf Bey IV, the former head of the now-defunct Your Black Muslim Bakery, played a larger role in the Aug. 2, 2007, killing of Oakland Post Editor Chauncey Bailey (pictured) than previously known, according to a preview story posted on the Merc’s Web site tonight.

The project also will report that Sgt. Derwin Longmire, the lead investigator in Bailey’s killing, never documented in his case notes key evidence linking Bey IV to deeper involvement in the crime.

“Something’s fishy. It appears (Bey IV) has some serious involvement, both before and after” the killing, said Richard Leo, a criminal law professor and author of a book on interrogations who said he found “a glaring problem” in the way Longmire worked the case, adding that numerous questions about the complete picture of what happened remain unanswered.

Here’s a link to the preview story posted tonight.