Douglas Madrid, 54, of Payette, Idaho, was shot and killed outside a residence north of Ontario, Oregon, on the evening of Wednesday, May 9, 2018. The cause of death was a shotgun blast to the head. Investigators described the shooting as a premeditated act tied to a dispute over money — Madrid had been trying to collect a $500 debt from people he knew.

Within days authorities identified and arrested four suspects: Sean C. Prokop, 29; Sara R. Carter, 25; Ryan S. Macias, 24; and Matthew Thomas Jaggi, 22. All four were indicted on murder, conspiracy to commit murder, hindering prosecution, and unlawful use of a weapon. Ryan Macias told police Madrid had previously kidnapped him and shown videos of killings to intimidate him.

Witnesses heard a single loud boom the night of the shooting; Madrid was found unresponsive in the driveway and later pronounced dead at a local hospital. Does anyone have information about Madrid’s movements in the days before May 9, 2018, or saw him that evening?