San Jose police said they have little to go on following a deadly shooting at Oak Hill Cemetery Saturday.
The shooting happened as a funeral was being held for the president of the San Jose Hell's Angels chapter Jeffrey Pettigrew. Pettigrew was shot and killed last month during a motorcycle festival in Sparks, Nevada on Sept 23.
Thousands turned out to honor Pettigrew when shots rang out around 1 p.m.
Police did not identify the person who died or the chapter he belonged to, but they did verify he was a member of Hell's Angels, according to AP.
The Mercury News identified the man as Steve Tausan from the Santa Cruz chapter of the club. The paper said Tausan punched a fellow biker during the gathering at Oak Hill and that biker retaliated with a gun.
People who were attending the funeral said there was already a heavy police presence at the service and officers flooded the scene immediately.
Officer Jose Garcia told NBC Bay Area that the crime scene had already been compromised when officers arrived. He would not elaborate.
Police had no suspect information and said no arrests have been made.
Valerie Hoffman said she left before the shooting, but told NBC Bay Area she was shocked when she heard what happened.
"I've known Hells Angels and all the other groups for years and years and years, and there is a code of ethics,'' Hoffman said. "You never do anything at a funeral. I mean that is just completely abominable.''