The shooting happened around 5:40 p.m. in the 1100 block of N. Gardener Street, according to the Los Angeles County Sheriff's Department.
The suspected robber died at a hospital after being shot. Detectives told Eyewitness News that the man was suspected of robbing a convenience store around the corner, but deputies caught up with him in the middle of N. Gardner Street - an area packed with apartments and homes.
It's unclear what led up to the shooting.
Authorities said a weapon was recovered at the scene.
No deputies were hurt in the shooting. An investigation continued late Saturday.