The Internal Revenue Service’s acting commissioner is resigning over a deal to share immigrants’ tax data with Immigration and Customs Enforcement for the purpose of identifying and deporting people illegally in the U.

Acting Internal Revenue Service Commissioner Melanie Krause informed her staff Tuesday she is leaving the agency amid internal chaos and the exodus of several senior IRS officials, according to two current IRS employees and one former IRS employee.

Acting IRS commissioner Melanie Krause will participate in the deferred resignation program the government offered to agency employees in recent days, the newspaper said.