UPDATE: Arnold's Mistress Was Fired

Los Angeles - The longtime staff member who mothered a child with former Gov. Arnold Schwarzenegger threatened to go public with details of their illicit affair because he fired her, it was reported today.

According to celebrity news website RadarOnline.com , the real reason behind the former governor's admission that he fathered a son with Mildred Patricia Baena was because of Baena's reaction when Schwarzenegger fired her from her housekeeper's job in an attempt to save his crumbling marriage.

"Mildred was furious that the father of her 14-year-old son would callously fire her from her job after decades of loyal service," one of the woman's confidantes reportedly told RadarOnline, speaking on condition of anonymity. "She admitted to friends how she finally wanted to tell the secret - that she had kept faithfully for 14 years -- to the world."

According to RadarOnline, it was not known if Baena's tell-all plan was ever executed, or if the threat prompted Schwarzenegger's disclosure about the child.

However, the revelation that she was fired is in direct contradiction to claims that she retired in January after two decades of working for Schwarzenegger and Shriver.

"Mildred did not retire ... she was working for Arnold and Maria until about four weeks ago," a source reportedly told RadarOnline.