Her son, 6-year-old Carter Clemons, was pronounced dead at the scene after McClendon shot himself on Facebook Live just after 11:30 a.m., authorities said.
Services stemming from the shooting have not been set.
RELATED: Shooter in murder-suicide ‘raged out’ because of PTSD, Army friend suspects
“The United States Postal Inspection Service is investigating and coordinating with local authorities,” the postal service statement added.
McClendon died from a self-inflicted gunshot wound, according to the Montgomery County Coroner’s Office.
RELATED: Man shoots child, woman, then himself on live video: ‘Tragic for everybody’
-MORE POPULAR READS:
TRENDING: Teacher in prison for sex with teen student makes new admission
RELATED: Judge: Teen in hotel slaying near Dayton Mall to be tried as adult