Seven people total were injured in the burst of violence, police said.
The 1-year-old boy was in his dad’s arms when a bullet traveled through his dad’s hand and lodged in his brain, a family member told the Daily News.
“There was a rap music video that had been shot prior to the shooting,” Officer Johnna Watson, spokeswoman for the Oakland Police Department, told The News.
She said it’s not clear if the video prompted the violence, or whether the attack was random.
“We’re still trying to work those details out,” she said.
Early reports said an Oakland rapper who goes by the name Kafani was at the scene. TV footage showed a van bearing his name that was riddled with bullets.
“I wasn’t there,” Kafani told the Daily News, explaining that his cousin Hiram Lawrence, also an aspiring artist, was the one shooting the video.
He said Lawrence was holding his baby son when the shots rang out and he attempted to shield the child.
“The bullet went through his hand and hit my baby cousin,” Kafani, 26, said.
“We don’t have any idea why it happened. It was just like random. They don’t have no reason to have anybody shooting at them,” Kafani, who declined to give a last name, said.
He said the little boy, also named Hiram, underwent surgery Monday night to relieve swelling in his brain.
“My auntie, she’s holding his hand and he’s responding a little, but he’s in coma,” he said.
Detectives are looking for “persons of interest” and asking any witnesses to come forward.
Cops said the shots sprayed a gathering of about 20 or 30 people, and that at least one person in the victims’ group fired back.