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.