Prosecutors are still looking to charge Bernard Madoff’s wife, Ruth, and other relatives, according to court papers filed yesterday by the Ponzi king’s former director of operations.

Daniel Bonventre, 64, who allegedly helped cook his books, claims he and other ex-employees are being squeezed to help “build a case against . . . the people closest to Mr. Madoff and [his] principal benefactors.”

The Manhattan federal court filing identifies the feds’ targets as “friends who invested extraordinary sums with [Madoff], as well as family members.”

Also yesterday, ex-Madoff “back office” worker, Annette Bongiorno, 62, said she should be sprung from jail because prosecutors have begun seizing the millions she allegedly reaped from the $65 billion scheme.

She is in an Oklahoma prisoner-transfer center, yet her TD Bank accounts, her husband Rudy’s E-Trade accounts and their joint Chase savings account have all been seized, her lawyers wrote.