After it was revealed she hired a private detective to look into her husband's past, Maria Shriver will most likely be filing for divorce this week, Entertainment Tonight reports.

Early Tuesday, RadarOnline.com reported that she had hired a private investigator to dig into her husband, Arnold Schwarzenegger's, past as she prepares a strategy for her divorce proceedings.

The former First Lady of Calfornia is reportedly suspicious that Schwarzenegger may have fathered more than one extra-marital child -- as many, including those close to the family -- say he has.