It happened around 8:57 a.m. in the 300 block of 69 Way near the 710 Freeway. When officers arrived, they found a man holding a knife and a woman who had been stabbed at least once.
The video featured in the media player above is from a previous report.
Officers asked the man to drop the knife but he refused, according to police. That's when shots were fired.
It's unclear if the man was struck by gunfire or if he suffered any kind of injuries - he was sent to the hospital in an unknown condition.
The woman's stabbing injuries were described as non-life threatening by police.
Officers are still investigating what may have led up to the stabbing. The relationship between the suspect and the victim remains unknown.