It all unfolded after a shooting with the suspect in the City of Industry near Fairview Drive and Walnut, according to the Los Angeles County Sheriff's Department.
That triggered a brief chase that ended on N. Roxdale Avenue in Valinda, where the suspect barricaded himself.
The sheriff's department says a deputy was injured, but is OK. It's unclear if the suspect was injured.
The suspect was later taken into custody.
Additional details about the shooting or what led up to it were not available.