Investigators are looking into whether a dispute over drugs led to a quadruple shooting Friday in Harbor Gateway that left three people dead, sources said.
Officials have said the incident appeared to be isolated.
"There is no additional danger to the community members in the area," LAPD Capt. Nancy Lauer told reporters Friday morning.
Officials said police received a 911 call about 5:35 a.m. from a resident reporting hearing eight or nine gunshots in an apartment building in the 1600 block of West 205th Street, where officers found three victims.
About a block away, police found a fourth shooting victim covered in blood walking near Del Amo Boulevard and Western Avenue, said Officer Christopher No. That person was listed in serious condition at a hospital, Lauer said.
Authorities said a red Dodge Charger and a gray Ford Explorer were seen speeding away from the scene.
"We have a number of leads," Lauer said.
The attack did not appear to be random, police said.
"This is not gang-related, this is not race-related," Sgt. Rudy Lopez said. "It appears all the individuals knew each other. It was an argument gone wrong."
Several blocks were cordoned off by police tape as detectives and officers huddled at the intersection of Harvard Boulevard and 206th Street. Some photographed the building and nearby sidewalk.
Some neighbors walked over to watch, shaking their heads when asked if they had heard anything earlier.
"I saw it on the news," one man said.
Others watched from their front windows or porches.
The neighborhood is a mix of houses and apartment buildings, most surrounded by wrought-iron fences and many with flowers in the frontyard.
Friday's deaths were the first homicides in the Harbor Gateway area this year, according to The Times' Homicide Report.