Nebraska Gov. Dave Heineman says last week’s shooting at a Connecticut elementary school that killed 26, including 20 children, was an evil tragedy, but the response should include more than just gun control.

Heineman said Monday he finds it unthinkable that anyone would shoot and kill elementary school students, but preventing mass shootings is a complicated problem.

He says any response to Friday’s shooting in Newtown, Conn., should look at issues related to family structure, mental health care, the justice system, society’s values and television violence as well as gun control.

Heineman says he thinks the Connecticut elementary school where the shooting happened had done more than most schools to improve security.

Heineman says it will be important to gather all the facts about this latest shooting before responding.