Sheriff's dispatch was called at 3:56 p.m. Thursday afternoon and found Brenda Renee Robinson, 52. She had been shot in the upper body.
Medical personnel pronounced her dead at the scene.
Homicide investigators learned she had been arguing with two people, then neighbors saw two men leave the apartment in a light colored SUV. They headed westbound on Nisqually Road.
There were three children in the apartment at the time of the shooting.
The suspects may have known the victim, according to Sheriff investigators, but the motive for the shooting is still unknown.
The suspects are described as black men in their late teens to early 20s. One was wearing a beanie and the other was light-skinned with short hair.
Anyone with any information is encouraged to call the Sheriff's Homicide detail at 909-387-3589 or WeTip at 800-78-CRIME or www.wetip.com.