Clackamas County Sheriff's Office

Cindy Yuille and Steven Forsyth were killed Tuesday in a shooting at Clackamas Town Center.

The Clackamas County Sheriff's department has identified victims of Tuesday's shooting at Clackamas Town Center mall.

The victims who died were 54-year old Cindy Yuille, a registered nurse, and 43-year-old Steven Forsyth from West Linn, who owned a business in the mall. There's no information about how or when their deaths occurred. Police also didn't have specifics about whether the shooter killed himself before or after police saw him.

Clackamas County Sheriff Craig Roberts identified the suspected shooter as 22-year old Jacob Taylor Roberts, of Portland - no relation to the sheriff.

Clackamas County Sheriff

Suspect Jacob Tyler Roberts

The sheriff credited three factors with preventing the loss of more lives: the fact that the shooter's gun jammed, the mall's plan for managing crisis incidents, and the actions of shoppers and staff who helped others get out fast.

"Ten thousand people at the mall kept a level head," Sheriff Roberts said. "They got themselves out. They helped others get out.

The investigation is ongoing. Anyone with information about what Roberts had been doing the last few days is asked to call the Clackamas Sheriff's Department non-emergency tip number: 503-723-4949.

This story originally appeared on Oregon Public Broadcasting.