(Decatur County, TN) -- After news of 29-year-old Zachary Adams’ indictment for the murder of missing 20-year-old Holly Bobo, clues into his strange and violent past are emerging.

Police reports show Adams show his mother in the knee in 2004, and she and his stepdad had an order of protection against him. In 2005, he reportedly threatened to kill his grandparents. He was also arrested last month for meth charges.