Katrina Armstrong, interim president of Columbia University, is stepping down, the school said in an announcement Friday.

Katrina Armstrong, Columbia University's interim president, is being replaced by Claire Shipman. The university did not offer an explanation for the change in leadership.

Columbia University’s interim president Katrina Armstrong has resigned, returning to her post running the New York school’s medical center. Armstrong’s return to her former job leading the university’s affiliated hospital comes days after Columbia agreed to a host of policy changes demanded by the Trump administration as a