Tzolov testified against Butler after pleading guilty in July 2009 to fraud and conspiracy, and to bail jumping for having fled to Spain.

He has prior convictions for driving under the influence in Indiana and Wyoming, battery in Wyoming and bail jumping in Texas, prosecutors said.

Before his death, Ozaukee County Sheriff's Department had several outstanding warrants against Katz, including Operate While Intoxicated, Operate After Revocation, and Bail Jumping.

WHITE PLAINS (AP) — A hedge-fund manager accused of faking his own suicide tried to plead guilty to bail jumping on Wednesday, but his case was postponed after he told the judge that his drug therapy was affecting his ability to think clearly.