chad geyen of ramsey , minnesota was found dead on sunday of a self-inflicted gunshot wound .
the married father of two had been reported missing on saturday .
he was set to stand trial monday on five counts of first-degree and two counts of second-degree criminal sexual conduct .
six boys claim they were sexually abused by the man hundreds of times starting when some were as young as 5-years-old .
one of the boys was even taken in by geyen as a foster child .
the hennepin county medical examiner 's office is set to release further details about geyen 's death later this week .