Update: The Sacramento County Sheriff's Office has released a composite sketch of one of the suspects in the fatal shooting.
They believe the suspect is a dark-skinned man in his early 20s with an average build and shoulder length dreadlocks.
The other suspects were all wearing dark clothing and seen leaving the scene in a white, compact or small SUV.
SOUTH SACRAMENTO -- The Sacramento County Sheriff's Office is investigating a shooting that left one woman dead and three injured, including a 4-year-old boy.
The shooting happened around 10:40 p.m. Friday at the Breckinridge Village apartment complex on Stockton Boulevard.
Investigators said all four of the victims are related and they were targeted.
As detectives look for a possible motive, friends and neighbors are heartbroken over the loss.
"The window just … I mean, it exploded," neighbor Phillip Stewart said. “I’ve never experienced gunfire that close to me. And, I know God spared us.”
Bullets flew through Stewart's apartment window during the shooting.
“I’m just thankful to be here. I’ve never experienced anything like this,” Stewart said.
He made it out OK, but his neighbors were not as fortunate.
A 27-year-old woman with multiple gunshot wounds was pronounced dead at the hospital. She was later identified by the coroner's office as Erica Frazier.
A 30-year-old man, a 26-year-old man and a 4-year-old boy remain in the hospital.
A friend of the deceased victim came to the apartment complex to see the investigation for himself.
“I didn’t believe it at first. It didn’t even set in until I got here," the friend said.
He did not want to be identified but said he’s heartbroken over this loss.
“She was a cool person," he said. "She had a big heart.”
He said the victim was a mother of two and that she did not live in the apartment complex but her family did.
“It’s important to stress the fact that detectives do believe this was a targeted shooting. But at the same time this is a very serious crime," said Sergeant Tess Deterding, Sacramento County Sheriff’s Office.
Investigators do not have a suspect description at this time and are still looking into a possible motive.
Stay with FOX40 for updates on this story.