One of those killed was shot in the store, the other in the parking lot. The shooter, described as an Asian male, is still at large.
It was unclear whether the victims were employees, customers or bystanders, Sgt. Todd Elgin said. Their identities were not immediately released.
The gunman opened fire about 1 p.m. outside Robotek, which sells performance car accessories, then burst inside and resumed the attack, police said.
CBS News Correspondent David Dow reports police are looking for an Asian man, in his 20s, who blazed away with a handgun inside and outside an auto parts store heavily patronized by young people..
Sergeant Dennis Ellsworth tells CBS Radio News police are investigating the possibility of an accomplice. They are still trying to piece together a possible motive for the attack, and are appealing for public help in tracking down the young assailant who opened fire with a handgun at an auto parts store, and fled in gray Mazda minivan.
Officers arrived at the scene to find two people wounded outside the store and more four inside. One man died in the parking lot and the other inside, Ellsworth said.
At least three of the injured are in critical condition and undergoing surgery at the University of California, Irvine, Medical Center in Orange.
|One of the dead.|
A 15-year-old boy was shot in the ankle and was in good condition at Garden Grove Medical Center.
His 18-year-old brother was in the store but escaped injury, hospital spokeswoman Donna Almand said.
Hours after the shooting a body, covered by a yellow sheet, lay between two cars in the parking lot. The passenger door was open.
Police did not know why that person was shot.
"It might have been wrong place, wrong time," Elgin said.
An employee at Vina, a pager store a couple of doors down, said he heard about 10 gunshots.
"I'm so scared, I hide behind my counter and I didn't see anything," said the employee, who declined to give his name.
He said the store was a popular hangout for young people.
Garden Grove is about 35 miles southeast of Los Angeles.
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