The man is in stable condition, police said.
Officers were first called to the 1000 block of Anaheim Street at about 6:30 p.m. Thursday.
Paramedics took him to a local hospital with non-life threatening injuries, police said.
Responding officers could not find a crime scene and there were no calls to 911 about shots fired in that area that night, police said.
The injured man, who was standing outside his vehicle when the shooting began Monday at South Street and Lime Avenue, was taken to the hospital and is expected to survive, police said.
The victim was in stable but critical condition, according to the LBPD.
He told officers he was standing outside in the area of 10th Street and Myrtle Avenue when someone drove by, fired shots and fled.
The victim told police he was shot by an unknown suspect while he was in his vehicle.
Police said the gunfire apparently broke out between two cars that were traveling north on Cherry Avenue from Rogers Street shortly before 5:20 p.m.
His arrest was an end to a chaotic day for residents at the apartment complex on Paramount Boulevard near South Street.