SPRINGFIELD, Ore. (AP) — Springfield Mayor Christine Lundberg has resigned from her post, which she has held for nearly 10 years, effective immediately. The Register-Guard reports the change in leadership was announced in a press release from city spokesperson Amber Fossen on Saturday afternoon. Lundberg says she made the decision with a heavy heart and attributed the decision to needing to take time for herself and her family. Lundberg did not respond to a call for comment from the newpspaper. Lundberg has been Springfield’s mayor since December 2010. She was reelected for another four years this May in Oregon’s primary election, carrying 58% of the vote over opponent Mike Eyster.