ABC News reports that the FBI has polygraphed Noor Salman, the wife of Omar Mateen, who killed 49 people in Orlando this past weekend. Salman is under investigation in connection with her husband's crime:
http://abcnews.go.com/WNT/video/attention-investigation-shifts-omar-mateens-wife-39861418
It is to be hoped that those investigating this heinous crime are not so stupid as to place any reliance on polygraph "test" results when assessing the credibility of Salman or any other potential suspect.
You never know, maybe she'll be intimidated by it and make confessions and admissions that she otherwise wouldn't.
Reports that Omar Mateen's wife was polygraphed may be wrong. See Sam Husseini's article, "Noor Zahi Salman: Everything You're Hearing About Me Is a Lie":
http://www.counterpunch.org/2016/06/16/noor-zahi-salman-everything-youre-hearing-about-me-is-a-lie/
and his interview with Scott Horton:
http://scotthorton.org/interviews/2016/06/16/61616-sam-husseini/