A domestic dispute in a Gilbert, Arizona, home turned deadly on Sunday, August 21, 2016, when 41-year-old Daniel Garofalo was shot and killed in the residence he shared with a younger roommate. The roommate, 21-year-old Zachary Penton, contacted police and confessed to shooting Garofalo after the two argued; the conflict reportedly began when Garofalo asked Penton to move out.

Penton later told officers he acted in self-defense, and authorities said they were weighing evidence, including the online post, to determine whether the killing was premeditated and could support a first-degree murder charge.

Anyone who knew Daniel, the household situation, or who has information about the days leading up to August 21, 2016, is asked to come forward.