Stem cell worker Haruko Obokata resigned from RIKEN over fraudulent work on STAP

Further to the IPBiz post RIKEN investigation confirms Obokata paper on stem cells in Nature used doctored figures, Scientific American has re-posted an article from Nature titled
  Scientist Resigns as Stem-Cell Creation Method Is Discredited.

This December 22 article notes that  Haruko Obokata resigned from RIKEN.  It also states:  " A few weeks later [after the retraction in July], one of the paper’s co-authors, Yoshiki Sasai, took his own life. "