By Paul Daquilante • Staff Writer • 

Abused Sheridan boy improving

The 4-year-old Sheridan boy allegedly beaten on multiple occasions by his mother’s live-in boyfriend is improving at the Oregon Health & Science University in Portland.

The alleged assailant, ex-cop Michael Shane Abo, 29, has been indicted by a Yamhill County grand jury on two counts each of first-degree assault and first-degree criminal mistreatment in connection with the case. Assault is a Class A felony carrying a lengthy mandatory minimum prison sentence under Measure 11; criminal mistreatment is a Class C felony.

A former Yamhill County sheriff’s deputy and Yamhill Police Department reserve, Abo is being held in the Washington County Jail in Hillsboro on $500,000 bail. His next appearance in circuit court is set for 3 p.m. Monday, March 17, by video.

The boy’s mother, Brandy Robertson, 29, now residing in Troutdale, has been charged with one count each of criminal mistreatment and reckless endangering.

She was granted conditional release at arraignment, provided she have no unsupervised contact with her son. Her next court appearance is set for 3 p.m. Monday.

The toddler suffered a traumatic brain injury and major injuries to his body, including scrotal bruising and seven broken ribs. But Capt. Matt Scales of the McMinnville police said he is beginning to show signs of improvement.

“He is starting to say yes and no, and can make throat sounds,” the captain said. “Hopefully, he will be able to talk soon. He can sit up, eat solid foods and is rolling around in a wheelchair.”

Scales said when the time comes that the boy can communicate in a meaningful way, investigators may attempt to interview him. He said an interview is not anticipated anytime soon, though.

The mother and child had recently moved into Abo’s Sheridan home, according to court records.

Abo told detectives the child had fallen down a stairwell. However, a doctor at OHSU said the massive and extensive injuries were not consistent with such a fall. He attributed them to “blunt force trauma” inflicted on at least two separate occasions.

Scales said Robertson’s arrest was the result of extensive follow-up investigation in an effort to piece together the elements of the boy’s tragic life. He said she was interviewed, along with friends, relatives and co-workers of both her and Abo.

The alleged criminal acts would normally fall under county jurisdiction, but due to Abo’s past county employment, the investigation was turned over to McMinnville police.



Michael Shane Abo is a miserable excuse for a human being and should be executed!

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