A Buckeye man called police after allegedly shooting and killing his wife in their home because she "broke the rules."

Police report that on May 7 Kenneth Eckert, 49, contacted them saying there was an accidental shooting in his home.

When police arrived at the home near Jackrabbit Trail and Yuma Road, they found the victim, 49-year-old Jennifer Eckert lying on the bed covered with a comforter and shot in the back of the head.

Police say they found numerous weapons in the bedroom and closet and a small caliber shell casing on the ground. Police say Eckert offered no explanation for what happened only requesting an attorney.

Police say handwritten notes from the victim were found, "detailing her willingness to follow Kenneth's rules and apologizing for being insufficient and breaking his rules."

Another note reportedly was written by the suspect stated that "she shouldn't have become his enemy."

Eckert reportedly told investigators that he was in the Marines for many years and that "there are certain rules."

Eckert was booked in jail on second-degree murder charges. He's being held on a $750,000 bond.

Jennifer Eckert was a teacher at Trivium Preparatory Academy in Goodyear.

In a statement from the Academy they say, "Mrs. Eckert was beloved by all of us, staff, students and our families. She shared her passion for teaching and joy for life every day and with everyone in the Trivium Community. She abundantly loved her students and she had a tremendous impact on everyone she encountered. Today we are heartbroken by the loss of such a dear teacher and friend. She will be greatly missed and always remembered." - Heidi Vasiloff, Headmaster - Trivium Prep.