Two additional suspects were arrested in connection with the investigation into disgraced US financier Bernie Madoff, the FBI confirmed Thursday.

Charges were due to be brought against both of the female suspects, who were allegedly involved in the “back office” of Madoff’s gigantic Ponzi scheme, later in the day.

"Joann Crupi was arrested by the FBI this morning at her residence in New Jersey, and Annette Bongiorno was arrested at her home in Florida,” said FBI Supervisory Special Agent Rich Kolko.

“Both of these arrests took place without incident. Charges, in connection with the Madoff investment fraud, will be unsealed in the Southern District of New York later today [Thursday]," he said.

In August, NewsCore reported that prosecutors were seeking more than $5.1 million in assets held by longtime Madoff employee Bongiorno, who authorities allege "knowingly perpetrated" her employer's fraud by sending out bogus account statements.

In addition to an annual salary and bonuses that peaked at $623,580 in 2007, Bongiorno maintained her own Madoff "investment advisory" accounts from which she withdrew $14.5 million despite investing only $919,000, according to the New York Post.

Prosecutors had also filed civil-forfeiture actions against Bongiorno and Crupi, who handled investor funds and kept track of the firm's daily cash balance in June.

Madoff is serving a 150-year sentence for his crimes while authorities continue to seize and auction off his personal items in a bid to recoup the multi-billion-dollar losses his investors suffered.
Most recently, the 10.54-carat engagement ring worn by wife Ruth Madoff fetched $550,000 at a New York auction.