Jacob Tyler Roberts

Jacob Tyler Roberts (March 16, 1990 – December 11, 2012) was identified as the sole perpetrator of the shooting.

He lived in the Lents neighborhood in southeast Portland.

On December 11, 2012, a shooting occurred at the Clackamas Town Center in the relatively urban section of Clackamas County, just outside the city of Portland, Oregon, United States.

The gunman, 22-year-old Jacob Tyler Roberts, ran into the shopping center wearing black clothing and a white expressionless facial mask and sporadically opened fire using a Stag Arms AR-15 rifle stolen from a friend.

He fired a total of 17 shots, killing two people and seriously wounding a third.

Many shots were ricochets.

Having attempted to reload his weapon and dropping three magazines, Roberts entered an employee-only back stairwell that runs behind all stores in the mall and committed suicide after descending one level.

He had no connection to any of his victims, and it was believed to be a random act of violence.

Sometime prior to the shooting, Roberts is stated to have stolen a Stag Arms STAG-15 AR-15-style rifle from an acquaintance.

Immediately before the shooting, he visited a friend who lived two miles away from the Clackamas Town Center, smoked marijuana with him, and claimed that he was moving to Hawaii.

He drove to the mall sometime later and parked at the south side between Macy's and Chipotle Mexican Grill.

He ran into the mall through Macy's department store at 3:28 p.m., wearing a white expressionless facial mask and dressed in a black sweater and black pants.

He was armed with the AR-15.

He was also carrying five loaded magazines, one of which he accidentally dropped in the parking lot while entering the mall.

Roberts legally bought four additional 30-round ammunition magazines and the ammunition to fill them at three local stores, including a Walmart, The Gunbroker, and Wholesale Sports Outdoor Outfitters.

When he stole the unsecured AR-15 from a friend, it was loaded with a 30-round ammunition magazine.

Between 8,000 and 10,000 people were inside the mall at the time.

People who first saw him run into the mall believed the tactical clothing and hockey mask were a paintball outfit and that the rifle was a toy.

Standing in a large atrium, Roberts first opened fire at the mall's food court that was across from him at his left.

The first person shot was 54-year-old shopper Cindy Ann Yuille, a hospice nurse and mother of two who was shot in the back; she died despite efforts of bystanders to treat her wound.

Fifteen-year-old Kristina Shevchenko, who was walking through the mall with her friend to reach the Town Center MAX station, was the second person to be shot; she received a bullet to the chest, but she survived and made it out of the mall, where she was treated for her gunshot wound.

The final victim was 45-year-old youth sports coach Steven Forsyth, the father of future NFL player Alex Forsyth, who was sitting by a rented kiosk and talking to his father on his cell phone when he was shot in the head and killed.

At this point, hundreds of people fled the mall after hearing the gunshots, but many remained inside and dashed to cover.

Roberts headed further toward the food court, firing at 16-year-old employee Alina Pavlenko, who was over 100 feet away, but missed.

He also dropped three other magazines in his possession.

He then turned back and headed toward a JCPenney store.

He attempted to reload the AR-15 at that point, but was unable to do so, the weapon having apparently jammed.

During that time, Nick Meli, a concealed carry permit holder, drew his Glock 22, claimed to have taken aim at Roberts, but did not fire since there was a bystander behind Roberts.

Meli claims that Roberts saw him and that this may have contributed to Roberts' decision to commit suicide.

Roberts then ran into a back storage corridor, where he encountered employee Rok Sang Kim, who had returned from recycling boxes and therefore hadn't heard the gunfire.

Roberts pointed the rifle at him, but didn't shoot him, instead running down a flight of stairs onto a lower floor.

There, he committed suicide at 3:50 p.m. In the chaos of the first few minutes after the shooting, there were expectations of mass casualties.

Police responded to the scene minutes later and spent the following hours searching the mall for hiding civilians, injured victims, and a possible second shooter, while dozens of ambulances arrived with the expectations of treating dozens of wounded victims, but treated only Kristina Shevchenko for a serious gunshot wound.

Roberts fired only seventeen rounds during the entire shooting, including the one to kill himself.

An additional 128 rounds were found in the magazines he dropped and on his person.

By the next day, the mall was cleared of civilians, but continued to remain under lock-down.

It is believed Roberts targeted random people and did not have a specific target in mind.

Two people were killed in the shooting, 54-year-old Cindy Ann Yuille and 45-year-old Steven Forsyth.

A third person, 15-year-old Kristina Shevchenko, was shot in the side of the chest and seriously injured, but survived.

Several others also suffered minor bruises and scrapes suffered while fleeing.