(Diego M. Radzinschi/NLJ)

Jacquelyn Kasulis, the lead prosecutor in former pharmaceutical executive Martin Shkreli’s fraud case, has been appointed chief of the business and securities fraud section for the Eastern District U.S. Attorney’s Office.

Kasulis, who in November 2015 became the division’s deputy chief, was recently appointed to the head role by acting U.S. Attorney Bridget Rohde, according to office spokesman John Marzulli. Her appointment became effective April 7.

Kasulis replaces former Brooklyn federal prosecutor Winston Paes, who stepped down earlier this year to join Debevoise & Plimpton as counsel for its white-collar defense and regulatory group in New York.

Paes previously led the Shkreli prosecution, which is expected to go to trial this year. Shkreli faces eight counts for allegedly scheming to defraud investors in two hedge funds he founded, then misappropriating assets from Retrophin Inc., a biopharmaceutical company he chaired until 2014, to pay off the hedge fund investors.

Kasulis joined the Eastern District in 2008 and has worked in the general crimes, organized crime and business and securities fraud sections. She participated in numerous investigations and trials of organized crime members, and was deputy chief of general crimes from September 2014 to November 2015, Marzulli added in a statement.

She has prosecuted some of the office’s most notable white-collar crime cases since joining the business and securities fraud section in 2013. For instance, she led the prosecution in United States v. Bandfield, in which 10 defendants and six corporations were charged with orchestrating large offshore securities fraud, money laundering and tax evasion schemes. The case represented the first criminal prosecution under the Foreign Account Tax Compliance Act, Marzulli said.