MULTNOMAH COUNTY, Ore. — Three men are facing attempted murder charges for the alleged assault of a TriMet passenger.

At 8:51 p.m. on Wednesday, October 15, 2025, Transit Police responded to reports of three men assaulting a man in the doorway of a TriMet bus near Southeast Stark Street and Southeast 142nd Avenue in Portland.

According to court documents, the three suspects, 28-year-old Greffy Tom, 27-year-old Rinson (also known as Terson) Tom, and 33-year-old Audric Yesiki, tried boarding a TriMet bus, which resulted in a perceived delay by one of the passengers.

When the passenger, later identified as a 50-year-old man, attempted to intervene, the three men are accused of assaulting him.

Paramedics took the 50-year-old man to the hospital with severe and serious physical injuries.

When law enforcement from TriMet’s Transit Police Division arrived, the suspects had left. However, the quick response resulted in officers and deputies locating all three suspects.

On October 24, 2025, a Multnomah County Grand Jury indicted the three suspects on the following charges:

Rinson (Terson) Tom 

• Attempted Murder in the Second Degree
• Three counts of Assault in the First Degree
• Three counts of Assault in the Second Degree
• Attempted Assault in the Second Degree
• Assault in the Third Degree
• Three counts of Unlawful Use of a Weapon
• Two counts of Interfering with Public Transportation
• Escape in the Third Degree 

Greffy Tom 

• Attempted Murder in the Second Degree
• Two counts of Assault in the First Degree
• Two counts of Assault in the Second Degree
• Assault in the Third Degree
• Two counts of Unlawful Use of a Weapon
• Two counts of Interfering with Public Transportation
• Escape in the Third Degree 

Audric Yesiki 

• Attempted Murder in the Second Degree
• Two counts of Assault in the First Degree
• Two counts of Assault in the Second Degree
• Assault in the Third Degree
• Two counts of Unlawful Use of a Weapon
• Two counts of Strangulation
• Two counts of Interfering with Public Transportation
• Escape in the Third Degree 

The suspects remain in custody.

No further information about the alleged assault is being released at this time pending the ongoing litigation.

Law enforcement assigned to Transit Police are focused on creating an environment where riders and TriMet operators feel safe. To accomplish this, Transit Police conduct high-visibility patrols, coordinated enforcement efforts with partnering agencies and proactive community engagement.

Charges are only allegations, and every arrested person is presumed innocent unless and until proven guilty beyond a reasonable doubt.

The information contained in this news release is based on a preliminary review of the details available to the Multnomah County Sheriff’s Office. As the investigation progresses, information may change.

About Transit Police:   

The Multnomah County Sheriff’s Office (MCSO) leads the multi-agency Transit Police Unit. Transit Police officers and deputies ensure a safe transit system by riding trains and buses and visiting platforms and stations. They respond to calls for service and investigate crimes that occur on TriMet property in Multnomah, Washington and Clackamas Counties. 

Current agencies comprising Transit Police include MCSO, the Portland Police Bureau, Port of Portland Police Department, Beaverton Police Department and Hillsboro Police Department.

Funding for TriMet’s Transit Police Division is provided by TriMet, which provides bus, light rail and commuter rail service in the Portland, Oregon, region. TriMet’s transportation options connect people with their community, while easing traffic congestion and reducing air pollution – making our region a better place to live. 

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