Vice President-elect Mike Pence will serve as head of Donald Trump’s transition to power, replacing New Jersey Governor Chris Christie, according to three sources with knowledge of the plans.

Christie, who was tapped as head of Trump’s transition efforts last May, will remain involved, most likely serving as a co-chair of the official transition run by Pence. Pence’s team has reached out to individuals involved in past presidential transitions for advice on process and staffing. The announcement of the changes could come as early as Friday afternoon.