Jacob Tyler Roberts, 22, the alleged gunman who went into the Clackamas Town Center shopping mall in Happy Valley, Oregon, a suburb of Portland, on Tuesday wearing a vest and a mask and carrying an AR-15 assault rifle, proceeded to shoot three people — killing two and injuring one — before reportedly turning the weapon on himself.

Roberts reportedly ran into the second floor of the Oregon mall firing his weapon as shoppers and innocent bystanders hid behind merchandise and clothing racks. Roberts appeared to shoot randomly into the crowd, stopping briefly when his gun jammed, reports the Wall Street Journal. He eventually unjammed the weapon and began shooting again. Among the victims identified were shopper Cindy Ann Yuille, 53, and merchant Steven Mathew Forsyth, 45. A third victim, reportedly a minor, was also injured and is in stable condition.

After the shooting rampage, Roberts was found dead of an apparent self-inflicted gunshot wound in the mall. His former high school describes him as "a soft-spoken and polite young man who was often eager to be helpful," in a statement.

While little is known at this time about Roberts' motives in the incident, the shooting has been "devastating to this community," said Joe Krumm, the director of community and government affairs for the North Clackamas district. "It's a gut punch," he said.

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