Abril Onofre, a 19-year-old Latina, was shot and killed Thursday, July 5, in the 1600 block of West 2nd Street in Westlake, according to Los Angeles County coroner's records.
A group of people were outside a home about 12:30 a.m. at a Fourth of July celebration, when more than one person walked up and began shooting at the crowd, said Los Angeles Police Det. Ray Martinez.
Six people were shot, police said.
Onofre and her boyfriend, Junior Salinas, 19, were pronounced dead at the scene at 1 a.m., according to coroner's records, which also show that Onofre was five months pregnant.
An 18-year-old man, a family friend named Ruben Alcantara Jr., later died at a hospital, records show.
Police say they believe the triple homicide is connected to gang activity, but Martinez declined to specify how. Police are seeking additional witnesses.
Anyone with information is asked to call detectives at (213) 484-3642. Those who wish to remain anonymous can call Crime Stoppers at (800) 222-8477.