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4th suspect in killing of Payette man is now in custody

Matthew Thomas Jaggi
Matthew Thomas Jaggi Canyon County Jail

An Idaho man was shot to death outside a house north of Ontario on Wednesday night — and over the weekend authorities apprehended their fourth suspect in the killing of Douglas Madrid.

Matthew Thomas Jaggi, 22, of Parma, was taken into custody on Saturday.

Canyon County Sheriff's Office SWAT and Idaho State Police took Jaggi into custody at about 1 p.m. in Roswell, a community south of Parma, Canyon County spokesman Joe Decker said. Jaggi surrendered without incident, and he is being held in the Canyon County Jail.

Madrid, a 54-year-old Payette man, was killed in the 4400 block of Oregon 201. He was shot in the head, Malheur County District Attorney David Goldthorpe said.

"All our information said they knew each other, and it was a disagreement about money," Goldthorpe said.

He said investigators have evidence that the act was premeditated. They don't have any evidence that it was drug-related, though that was a suspicion. It is not believed to be gang-related.

The shooting occurred after dark. Witnesses reported hearing one shot fired.

The first three people arrested were Sean Prokop, 29, of Ontario; Sara Carter, 25, of Ontario; and Ryan Macias, 24, of Ontario.

All face charges of murder, conspiracy to commit murder, hindering prosecution and unlawful use of a weapon. They will go before a grand jury this week, Goldthorpe said.

Katy Moeller: 208-377-6413