Washington man charged with murder in death of pedestrian, 88

A 68-year-old Bellevue man has been charged with premeditated first-degree murder, accused of “weaponizing” his Toyota Camry by intentionally plowing into a pedestrian and running her over last week in the parking lot of the Bellevue Family YMCA, according to King County prosecutors.

After killing 88-year-old Shinko Oshino on Saturday, Mark Adams is accused of driving south to Tacoma, where he struck two other people with his car, about 2 ½ hours apart, according to charging documents filed in King County Superior Court. One victim suffered a spinal fracture, and it was unknown what injuries were sustained by the other victim.

The charging documents, filed Wednesday, do not indicate whether officials believe Adams knew any of the people hit by the Camry.

Adams, who was also charged with felony hit and run in connection with Oshino’s death, has not been charged in the Tacoma cases. He was arrested Sunday in Port Townsend, transferred into the custody of Bellevue police and booked into the King County Jail, where he remains in lieu of $5 million bail.

King County prosecutors will review the Tacoma cases and if they decide to file charges, incorporate them into the Bellevue case, said Adam Faber, a spokesperson for the Pierce County prosecuting attorney’s office.

Adams is also the subject of a 2024 protection order after he allegedly stalked and held up his mother and her husband at knifepoint, King County Senior Deputy Prosecutor Jacqueline Lawrence noted in charging documents.

“The Defendant’s violence is increasing, goes beyond the members of his own family, and is a threat to the public at large,” she wrote.

Bellevue police responded to the YMCA parking lot around 7:40 a.m. Saturday, where fire department medics pronounced Oshino deceased, charging papers say.

Video surveillance footage showed that Adams, who was a member of the YMCA in the 14300 block of Bel-Red Road, arrived about an hour earlier and repeatedly circled the parking lot on the east side of the building, pulling into and out of the same parking spot while “laying in wait for a pedestrian victim,” according to the charges.

Oshino is seen in the footage walking south through the lot and the Camry is seen being driven behind her before accelerating and striking her; Oshino was on the hood for 120 feet before she fell when the vehicle braked, her body then dragged nearly 50 feet before the car took off, the charges say.

The Camry’s license plate is clearly seen in the footage, and the charges say Adams is the registered owner and is known to be living out of his car.

A Bellevue police detective sent out a request for any traffic camera footage of the Camry and received a screenshot of the vehicle in Auburn before learning the Camry was the suspect vehicle in two hit-and-runs in Tacoma, one at 10 a.m. and the second at 12:38 p.m., according to charging papers.

The Bellevue detective then obtained an order for real time location data for Adams' cellphone, which placed him at the YMCA, in Auburn and at the two Tacoma crime scenes, the charges say. The real time location data ultimately showed the phone was in Port Townsend, charging papers say, leading Jefferson County sheriff’s deputies to find the Camry parked outside a house, where Marks was taken into custody.

“Adams was reported as voluntarily asking a Jefferson County Sheriff’s Deputy if Bellevue or Tacoma was there to pick him up at the time of his arrest,” the charges say.

Adams is scheduled to be arraigned Monday.

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