The victim was in stable but critical condition, according to the LBPD.
Police were first called to the home in the 1800 block of 57th Street, which is next to Harte Elementary School, at about 12:50 a.m.
He told officers he was standing outside in the area of 10th Street and Myrtle Avenue when someone drove by, fired shots and fled.
A young man was able to rescue one person from a deadly fire in Bixby Knolls last night, but the raging flames stopped him from saving another man from the blaze, the LBFD said.
A woman first called police around 1:35 p.m. saying a man had pointed a gun at her in the 2100 block of Pacific Place, police spokeswoman Allison Gallagher said.
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.
In nearly all the attacks, the suspect grabbed the victim in some way and thrusted his pelvis against her.
Cars wrapped around the campus, down Orange Avenue, snaking onto PCH all the way to Walnut Avenue on Monday and did the same Tuesday afternoon.
His arrest was an end to a chaotic day for residents at the apartment complex on Paramount Boulevard near South Street.