The Financial Crimes Enforcement Network (FinCEN) will have a new director later this month, part of a Biden administration shakeup of the Treasury division that is primarily responsible for investigating financial crime.

FinCEN Director Kenneth Blanco, who has served in the position since December 2017, will step down April 9, he announced Friday in a press release.

“I am proud to have led an incredible organization with an important national security mission that has a profound effect on the lives of so many people, especially the most vulnerable in our society,” Blanco said in a statement.

Michael Mosier, formerly the deputy director of FinCEN and currently counselor to the deputy secretary of the Treasury, will return to FinCEN as acting director on April 11.

Congress has tasked FinCEN with assessing and overhauling several financial crime detection programs, creating a beneficial ownership registry for corporations, and instituting a whistleblower program. On Thursday, FinCEN launched the rulemaking process for the beneficial ownership registry.

Mosier previously worked at cryptocurrency analytics, compliance, and investigations firm Chainalysis, where he was chief technical counsel.

He has also served as an associate director at the Treasury’s Office of Foreign Assets Control (OFAC), as a financial crimes prosecutor with the Department of Justice (DOJ), on the White House National Security Council, and as an adjunct professor of law at Georgetown University Law Center.

AnnaLou Tirol, former associate director of FinCEN’s Strategic Operations Division, is currently serving as the agency’s deputy director.

Tirol, who joined FinCEN in 2019, previously oversaw the DOJ’s Public Integrity Section and worked as an assistant U.S. attorney in San Diego. She is also an adjunct professor of law at Georgetown University Law Center.