SOUTH LOS ANGELES (CBSLA.com) — A 19-year-old man was shot and killed Monday while he was walking his younger brother to school in South Los Angeles, according to the Los Angeles Police Department.

The incident happened shortly after 8 a.m. in the 600 block of Lanzit Avenue.

“They were headed over to go to Locke High School,” said Capt. Phil Tingirides. “They were approached by a male, African American suspect who had some sort of conversation with them. Then he pulled a gun out and started shooting.”

The 14-year-old wasn’t hurt, but his brother was shot twice in the chest.

Neighbor Nia Tiggs said she heard the gunshots from her home.

“I don’t know if it was a back-and-forth thing, but all I know is when I came outside, I looked down the street, and the guy was laying on the curb…stretched out,” she said.

“I saw the little boy trying to resuscitate him,” said Tiggs.

The victim was pronounced dead at the hospital.

Tingirides said authorities are looking into a gang motive.

“We’re also trying to look to see if there was a conflict between the victim and either that person or persons he knows, to see if there was a motive behind this,” he said.

Tingirides said he doesn’t know if the victim was involved with gangs.