DNA Match Confirms 'Doomsday Mom' Lori Vallow Present at Burial of Slain Children

A piece of Lori Vallow's hair was found on duct tape used to wrap her son's body before burial
DNA testing confirmed the hair matched Lori Vallow's DNA profile with a high degree of certainty
Lori Vallow and her husband are on trial for the murders of her children and conspiring to kill her husband's first wife
The discovery provides the first physical evidence directly tying Vallow to the murders of her children
Vallow's children were found buried on properties connected to Vallow and her husband