Sheriff's Office completes investigation of shootings of Forsyth, Yuille and Shevchenko; written reports now available

News Release from: Clackamas Co. Sheriff's Office

Posted: Wednesday, May 1, 2013


Media and Interested Parties


MULTIMEDIA: 7-page PDF of investigative timeline and other facts (PDF format)

Please reference Clackamas County Sheriff's Office Case #12-36745

The Clackamas County Sheriff's Office has completed its investigation of the murders of Steven Forsyth and Cindy Yuille and the attempted murder of Kristina Shevchenko on Tuesday, December 11, 2012 at Clackamas Town Center.

Investigators list Jacob Tyler Roberts -- age 22, of Portland, Oregon -- as the lone suspect in this case. All evidence consistently indicates that the suspect acted alone. The suspect died at the scene as a result of a self-inflicted gunshot wound.

To date, a motive for this crime has not been determined -- despite exhaustive and far-reaching efforts by investigators that included interviews with hundreds of witnesses as well as family members, co-workers and friends of Jacob Roberts.


"The Clackamas County Sheriff's Office offers its sincere condolences to the Forsyth, Yuille, and Shevchenko families for the pain and losses they suffered. We thank them for their cooperation and understanding during this investigation.

"We also extend our thanks to all the citizens present at the Clackamas Town Center who helped their family, friends, co-workers, customers, and strangers get to a place of safety when the violence erupted.

"I also thank our many partners in public safety from around the region -- first responders came to the mall with expedience, put themselves willingly into harm's way, and stayed to provide assistance as long as they were needed.

"We also commend The Clackamas Town Center management team and General Growth Properties for having the foresight to hold Active Shooter Training with us in their mall. Preparing their staff and merchants for the worst possible situation not only showed responsible caretaking, but also set an example for the rest of our region and the nation."


Written reports and photos from this investigation are now available for release.

A bullet-point overview of the investigative findings, timeline of events leading up to the Dec. 11, 2012 incident, and map of the suspect's path through the mall is available here as a 7-page PDF.

To request a copy of the investigation, contact Records Coordinator Tami Dran by email and request a copy of CCSO Case #12-36745. Electronic copies of the document are free; printed copies will be provided at our standard rates.

Clackamas County Sheriff's Office active-shooter investigation summary:

Following is a basic chronology of events in the case, along with other facts (also available in this PDF). Many details are being revealed here publicly for the first time. Further details can be found in the investigation case files.


  • Number of tips received: 311
  • Number of reports written by police: 281
  • Number of people interviewed: 227
  • Number of different police-report authors: 114


1. Cindy Yuille

  • 54 years old
  • Shopper
  • Died as the result of a single rifle gunshot
  • Hit by first shot fired by suspect

2. Steven Forsyth

  • 45 years old
  • Working at his kiosk store
  • Died as the result of a single rifle gunshot while moving behind his mall kiosk

3. Kristina Shevchenko

  • 15 years old
  • Walking through mall to train stop on other side
  • Survived a single rifle gunshot; injury sustained while running away from suspect



  • 22 years old
  • No criminal history
  • No relationship to any victim
  • No known ties to the mall
  • No history of violence
  • No history of diagnosed mental illness


  • Foam earplugs
  • Mask
  • Gloves
  • Load-bearing vest with pockets for rifle magazines (not bullet-resistant)
  • No ID or Wallet


  • Suspect armed with Stag Arms AR-15, a semi-automatic rifle
  • Had 145 rounds in 5 magazines
  • Fired 17 shots total (this includes the self-inflicted shot to the head that killed him)


  • Marijuana
  • Low level of residual cocaine (use 36-48 hrs. prior)


DEC. 1, 2012:
Suspect and girlfriend voluntarily break up. He says he is moving to Hawaii; she doesn't have the money to go with him.

DEC. 5:
Suspect tells boss he is moving to Hawaii and voluntarily quits job.

DEC. 7:
Suspect stops by job to say goodbye to co-workers. Meets friend at local bar and tells her he is leaving for Hawaii on Dec. 8.

DEC. 8:
Suspect buys two 30-round AR-15 magazines from local gun shop, then buys two 20-count boxes of .223 ammo, ear plugs, paper targets at local big-box retailer.

DEC. 9:

  • Suspect buys two 30-round AR-15 magazines and paper targets from sporting-goods store, then buys four 20-count boxes of .223 ammo and paper targets at local big-box retailer. He also lists his car for sale on Craigslist.
  • Roommates return from weekend trip and are surprised to find suspect still here. Suspect tells roommates he partied Friday night, and so he overslept and missed his flight. Tells roommates he is still going to Hawaii and says he has switched his flight date to next weekend.

DEC. 11, 2012 -- DAY OF SHOOTING (all times approximate):

  • 12:15 a.m. -- Suspect meets friend, Sean Cates, at Putter's Bar & Grill.
  • 1:30 a.m. -- Suspect and Cates buy beer at 7-Eleven and return to Cates' home to drink, play pool, and smoke marijuana. Cates shows suspect his AR-15 rifle (later stolen by suspect). Suspect had seen this rifle several months prior, but Cates had never taken the suspect shooting.
  • 3 a.m. -- Suspect and Cates head to Denny's (across the street from mall) for late-night meal.
  • UNKNOWN TIME: Suspect confides in Cates that he decided not to go to Hawaii and doesn't want others to know, but is still leaving town. Cates didn't ask further.
  • 5 a.m. -- Suspect & Cates return to Cates' home. Suspect goes to sleep on couch.
  • Unknown time between 5 a.m. and noon -- Suspect steals rifle.
  • 12 noon -- Suspect stops by his home, talks briefly with roommates, leaves with pair of boots and small plastic bag of clothes.
  • 3 p.m. -- Suspect visits friend Tyler Eheler, who lives two miles from mall. The two talk about him leaving to Hawaii and smoke small amount of marijuana.
  • 3:15 p.m. -- Approximate time suspect leaves Tyler Eheler's.
  • 3:28 p.m. -- Suspect enters Macy's from parking lot wearing a mask and carrying a rifle. Leaves windshield wipers running and his ID in car. There are an estimated 8,000-10,000 shoppers on the mall property at the time.
  • 3:29 p.m. -- Clackamas County 9-1-1 receives a call from Macy's store at the mall.
  • 12 seconds after initial incoming 9-1-1 call, dispatch broadcasts the call for patrol units. Transit Police Officers respond to mall on foot from their office in the MAX parking garage.
  • First CCSO unit arrives in the mall parking lot at 3:30:29 -- 1 minute and 12 seconds after call was dispatched.
  • 3:30 p.m. -- Shortly after first units arrive, dispatch receives info that suspect has a white face mask, black coat and pants, rifle and is walking into Macy's Home Store. Also begin to get calls confirming victims.
  • 3:29 p.m. to 3:30 p.m. -- Suspect shoots Cindy Yuille, Kristina Shevchenko, then Steven Forsyth, and fires 13 more rounds that do not hit anyone.
  • 3:51p.m. -- CCSO locates suspect dead in service hallway near JC Penney. Suspect's route through mall can be found on pages 6-7 of this PDF.


  • First 9-1-1 call from department store: 37 seconds after suspect enters
  • Time suspect is in public view: 1 min. 41 sec. (35 sec. in Macy's)
  • Time from 9-1-1 call to first police group entering mall: 2.5 min.
  • 6 minutes after dispatch, 17 officers are inside mall searching for suspect.
  • 21 minutes after dispatch, an initial response police team locates suspect deceased in back service hallway.
  • Tactical teams finished "slow clear" of mall -- looking for additional injured people or possible accomplices in hiding -- at 3:30 a.m. on Wednesday, Dec. 12.


  • On a typical weekday in December, Clackamas County Dispatch will answer 200 to 300 9-1-1 calls in a 24-hour period.
  • On Dec. 11, 2012, in the five hours between 2 and 7 p.m., 365 9-1-1 calls were answered.
  • At approximately 3:29 p.m., Clackamas County Dispatch receives the first call about this incident.
  • By 3:40 p.m. (11 minutes later), Clackamas County Dispatch dispatchers answered 94 9-1-1 calls.


  • Roommates called into CCSO Tip Line at 7:03 p.m. after hearing of shooting. Provided name of Jacob Roberts.
  • Earlier in day, roommates had found empty ammo boxes in his room. Learned from Internet that ammo could be used for AR-15.
  • Suspect told roommates he was getting inheritance and moving to Hawaii. Roommates confirmed he had sold a couch and Xbox on Craigslist.


  • Stolen rifle owner: Sean Cates. Rifle legally purchased in 2011.
  • Suspect visited, hung out, slept at Cates' on Dec. 11.
  • Cates wakes up 4 p.m. on Dec. 11, finds rifle and suspect gone.
  • Goes to work at 5 p.m. Tells co-worker who is getting off shift that rifle is missing.
  • Co-worker calls later, tells Cates about mall situation.
  • Cates calls 911 from payphone at approximately 7 p.m. to report the rifle stolen to Portland Police. Reporting officer recognizes possible relation to mall situation and contacts Sheriff's Office detectives.
  • Sheriff's Office detectives respond to Cates' home and do a detailed interview.


  • Fingerprint at scene revealed no matches in criminal system
  • Suspect name, obtained from rifle owner and roommates
  • Computer databases used to locate possible relative's address
  • Aunt (had no contact for 2 years)
  • Matching tattoos on aunt and suspect



The Clackamas County Sheriff's Office welcomes additional tips and information regarding this crime.

Anyone with information concerning this crime is encouraged to contact the Clackamas County Sheriff's Office's confidential Tip Line -- by telephone at 503-723-4949 or by using the online e-mail form. Please reference Clackamas County Sheriff's Office Case #12-36745.

The public can also submit crime-tip text messages to the Clackamas County Sheriff's Office from a cell phone. All users have to do is send a text message to CRIMES (274637 on your phone keypad) -- with the keyword CCSO as the first word in the message body.

Important reminder: Please do not send emergency messages using the text-messaging system -- in case of an emergency, call 911.

Again, please reference Clackamas County Sheriff's Office Case #12-36745.


News-release archive

Contact Info:
James Rhodes, Lieutenant
Office of Public Information
Clackamas County Sheriff's Office


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