Prosecutor: Nephew kills uncle in blackout rage

Matthew Bigboy at his first court appearance on charges he murdered his uncle, March 17, 2014 (KOIN 6 News)
Matthew Bigboy at his first court appearance on charges he murdered his uncle, March 17, 2014 (KOIN 6 News)

PORTLAND, Ore. (KOIN) — A 22-year-old man is charged with one count of murder after police said he killed his uncle one week ago, and new court documents state that the suspect changed his story several times before finally confessing to the stabbing.

Matthew Bigboy made his first court appearance Monday after his weekend arrest, six days after his uncle was found dead in his Northeast Portland apartment.

On March 10, the body of Eugene Bigboy was found inside his apartment in the 5800 block of Northeast Center Commons Way after officers conducted a welfare check. Court documents showed Bigboy, who had failing kidneys, had a dialysis appointment that he didn’t make.

Matthew Galen Bigboy, March 16, 2014 (Multnomah County Sheriff's Office)
Matthew Galen Bigboy, March 16, 2014 (Multnomah County Sheriff’s Office)

Bigboy was found lying on his back and there was no immediate sign of violence, documents said.

Two days later, Eugene’s family members contacted police and said Matthew had information about the death.

At their first meeting, documents said Matthew told police he was with his uncle on the night of March 9 when they were assaulted near a MAX platform in North Portland and that Eugene had been stabbed in the back.

He told police he carried his uncle back to his apartment and that the elder Bigboy died in his arms.

But an autopsy on March 13 showed Eugene Bigboy suffered multiple stab wounds to his back and rear buttocks, fractured ribs, a fractured jaw and bruises on his head below his hair, documents said. The fatal stab wound punctured his lung.

The Medical Examiner also noted Eugene Bigboy’s scalp had the mark of what could be the sole of a tennis shoe.

Investigators did not find any TriMet video showing the attack Matthew Bigboy mentioned, nor were there any police reports from witnesses.

Police interviewed him again on March 16 and he allegedly admitted he and his uncle had been drinking and got into a fight. Documents state Bigboy said his uncle hit him which put Matthew into a black-out type “rage.” He allegedly said he pulled a knife from his pocket, threw his uncle on the ground and then “stomped on” his head.

Court documents also showed Bigboy wrote an apology later “expressing remorse for killing his uncle.”

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