4 people killed in shooting at Halloween party in Orinda

Contra Costa County Sheriff deputies investigate a multiple shooting on Lucille Way in Orinda, Calif., on Thursday, Oct. 31, 2019. Four people died and several others were injured at Halloween party in a short-term rental property according to Orinda Police Chief David Cook.

less Contra Costa County Sheriff deputies investigate a multiple shooting on Lucille Way in Orinda, Calif., on Thursday, Oct. 31, 2019. Four people died and several others were injured at Halloween party in a ... more Photo: MediaNews Group/East Bay Times V/MediaNews Group Via Getty Images Photo: MediaNews Group/East Bay Times V/MediaNews Group Via Getty Images Image 1 of / 15 Caption Close 4 people killed in shooting at Halloween party in Orinda 1 / 15 Back to Gallery

Four people were killed and several injured Thursday night in a shooting at a Halloween party in Orinda, Calif.

The shooting was reported at 10:50 p.m. on the 100 block of Lucille Way, according to a statement from the Contra Costa County Sheriff's Office. The home is about a mile from Orinda Village and the BART station.

More than 100 people were at the party when police arrived at the house, which was rented through Airbnb for the event.

Police said three people were pronounced dead from apparent gunshot wounds on the scene; another died later at a hospital.

The exact number of injured victims is unknown. Some went to local hospitals in ambulances and others transported themselves. Four of the injured victims were taken to John Muir Medical Center in Walnut Creek.

"One died shortly after arriving, one is in critical condition, one is in serious condition and one was treated and released," said Ben Drew, a spokesperson for John Muir.

Airbnb said the party was unauthorized by the host, and the listing's house rules specifically don't allow parties. The home's listing has been removed from the site as the situation is under investigation.

The Associated Press reported a person with knowledge of the business transaction told them the owner of the rental wanted to make sure the woman seeking to rent the property on Halloween night wasn't planning a party.

The renter told the homeowner that her family members had asthma and needed a place with fresh air, according to the AP's source. The person was not authorized to publicly disclose the information and spoke only on condition of anonymity.

Michael Wang, who owns the home, said he rented it out to a woman through Airbnb for what she said would be a family reunion for a dozen people, according to The San Francisco Chronicle.

Wang said his wife reached out to the woman after neighbors called complaining about excessive noise. The woman said there were only 12 people at the party, but Wang said he could see more people via video from his Ring doorbell camera.

Video from the scene posted by KGO-TV showed patients being loaded into ambulances as others limped away from the scene.

Residents of the neighborhood were frustrated with the party's noise before the shooting, said neighbor Chris Gade.

"It was just more of a noise complaint that we were worried about originally," he told reporters.

Then Gade said he heard gunshots and saw people "screaming and fleeing down the hill."

"I think everybody in our neighborhood immediately locked our doors and started messaging each other, trying to figure out what was going on," he said. "This just doesn't happen in Orinda."

Information on a suspect wasn't available Friday morning and an investigation is underway.

Prior to these killings, Orinda, a quiet city of under 20,000 residents east of San Francisco, has recorded only one other homicide in the past 15 years.

The Associated Press contributed to this report.

Amy Graff is a digital editor for SFGATE. Email her at agraff@sfgate.com.