La'marrion Upchurch, 15

La’marrion Upchurch, a 15-year-old black male from Long Beach, was shot and killed Sunday, May 13, in the 300 block of West Manchester Avenue in Florence, according to Los Angeles County coroner’s records.

Shortly before 1:30 a.m., La’marrion and three other teenagers were walking east on West Manchester Avenue when they were shot, said Los Angeles Police Det. Chris Barling. All four teenagers were wounded. It's unclear where the shooting originated from, Barling said.

La’marrion was pronounced dead at the scene at 1:42 a.m., according to coroner's records.

The three other teens were taken to a hospital, police said. Monyae Jackson, 15, was pronounced dead two days later. The other two teenagers were treated and released, Barling said.

Detectives are looking into the motive for the shooting.

La’marrion was a dancer who went by “Lil BZ,” members of the dance crew he performed with told the Long Beach Press-Telegram.

“It took everybody by surprise. He was a pretty popular dude,” said Tommy Johnson, who is known for bringing a dance style called “clowning” to Los Angeles as part of the group “Tommy the Clown.”

Johnson said La’marrion had been dancing with his group for years. Another member, 29-year-old Bernard Sears, who performs as iDanceBz, took La’marrion under his wing.

“We just saw the potential in him,” Sears said.

Bridget Green, Monyae Jackson’s mother, told KTLA-TV that the teenagers traveled from Long Beach to attend a party in the area.

"Jesus, why did they do this to my child? Why did they do this to these two babies?" Green said at a vigil held in the wake of the shooting. "It's not making no sense that all these parents are losing their children over this senseless violence. You have to stop."

Anyone with information is asked to call detectives at (323) 786-5113. Those who wish to remain anonymous can call Crime Stoppers at (800) 222-8477.

Contact the Homicide Report. Follow @nicolesantacruz and @latimeshomicide on Twitter.