Grabs from video show numerous emergency responders at the scene assisting with victims and loading patients into ambulances.  The video also shows at least two Injured attendees limping and needing assistance due to injuries.  A woman could also be seen sitting in the street crying.  The Contra Costa Sheriff's Office tweeted, Orinda Police Department and Contra Costa County Office of the Sheriff are working a multiple shooting in Orinda. Investigation is active." Police were investigating a Halloween night shooting involving multiple victims, authorities told CNN affiliate KPIX.
Craig Cannon
Grabs from video show numerous emergency responders at the scene assisting with victims and loading patients into ambulances. The video also shows at least two Injured attendees limping and needing assistance due to injuries. A woman could also be seen sitting in the street crying. The Contra Costa Sheriff's Office tweeted, Orinda Police Department and Contra Costa County Office of the Sheriff are working a multiple shooting in Orinda. Investigation is active." Police were investigating a Halloween night shooting involving multiple victims, authorities told CNN affiliate KPIX.
Now playing
00:31
4 killed in California Halloween party shooting
Now playing
03:36
Local election officials to be ousted after Georgia governor signs law
CNN
Now playing
03:14
This family's lives will be changed by the child tax credit
WDJT
Now playing
01:35
Sen. Ron Johnson gets heckled at Juneteenth event
CNN
Now playing
02:39
NY candidate says he's joining forces with his opponent. Here's why
FLINT, MI - OCTOBER 31: Former U.S. President Barack Obama speaks during a drive-in campaign rally for Democratic presidential nominee Joe Biden at Northwestern High School on October 31, 2020 in Flint, Michigan. Biden is campaigning with former President Obama on Saturday in Michigan, a battleground state that President Donald Trump narrowly won in 2016. (Photo by Drew Angerer/Getty Images)
Drew Angerer/Getty Images North America/Getty Images
FLINT, MI - OCTOBER 31: Former U.S. President Barack Obama speaks during a drive-in campaign rally for Democratic presidential nominee Joe Biden at Northwestern High School on October 31, 2020 in Flint, Michigan. Biden is campaigning with former President Obama on Saturday in Michigan, a battleground state that President Donald Trump narrowly won in 2016. (Photo by Drew Angerer/Getty Images)
Now playing
00:54
Obama slams GOP's opposition to voting reform
Getty Images
Now playing
02:47
Enten: Straw poll of GOP activists rates DeSantis over Trump
Iran's new President-elect Ebrahim Raisi speaks during a press conference in Tehran, Iran, Monday, June 21, 2021. (AP Photo/Vahid Salemi)
Vahid Salemi/AP
Iran's new President-elect Ebrahim Raisi speaks during a press conference in Tehran, Iran, Monday, June 21, 2021. (AP Photo/Vahid Salemi)
Now playing
02:28
CNN asked Iran's President-Elect about nuclear deal. Hear his reply
CNN
Now playing
05:17
'It's too late for me': Why dying veteran fights to end military burn pits
Children in Brazil have been dying from Covid-19 at higher rates than nearly anywhere else in the world. Doctors and researchers say the country's higher child death rate stems from several issues but the main culprit is social inequality. CNN's Isa Soares reports.
CNN
Children in Brazil have been dying from Covid-19 at higher rates than nearly anywhere else in the world. Doctors and researchers say the country's higher child death rate stems from several issues but the main culprit is social inequality. CNN's Isa Soares reports.
Now playing
04:19
See family's emotional reunion as daughter leaves hospital after Covid-19 battle
Family Photo
Now playing
03:25
Research indicates Latinos killed by police are severely undercounted
Now playing
02:26
'It's no fun': One of QAnon's first targets speaks out
WASHINGTON, DC - JUNE 30:  Dr. Anthony Fauci, director of the National Institute for Allergy and Infectious Diseases, testifies at a hearing of the Senate Health, Education, Labor and Pensions Committee on June 30, 2020 in Washington, DC. The committee is examining efforts to contain the Covid-19 pandemic while putting people back to work and kids back in school.  (Photo by Kevin Dietsch-Pool/Getty Images)
Kevin Dietsch/Getty Images
WASHINGTON, DC - JUNE 30: Dr. Anthony Fauci, director of the National Institute for Allergy and Infectious Diseases, testifies at a hearing of the Senate Health, Education, Labor and Pensions Committee on June 30, 2020 in Washington, DC. The committee is examining efforts to contain the Covid-19 pandemic while putting people back to work and kids back in school. (Photo by Kevin Dietsch-Pool/Getty Images)
Now playing
02:29
'Let me give you a flash': Hear Dr. Fauci fire back at critics
Brandon Clement
Now playing
00:56
See dramatic aerials of tornado damage
An American airlines airplane is seen at the Juan Santa Maria airport in Alajuela, Costa Rica, on May 28, 2021. - Costa Rica is experiencing its most critical moment since the Covid-19 pandemic breakout, in March 2020, but maintains an encouraging outlook for its economic reactivation.
Ezequiel Becerra/AFP/Getty Images
An American airlines airplane is seen at the Juan Santa Maria airport in Alajuela, Costa Rica, on May 28, 2021. - Costa Rica is experiencing its most critical moment since the Covid-19 pandemic breakout, in March 2020, but maintains an encouraging outlook for its economic reactivation.
Now playing
01:39
See why American Airlines is canceling hundreds of flights
CNN
Now playing
03:01
Graduation ceremony provides moment of relief for SC seniors
Now playing
02:45
First day of summer hints at more extreme heat for the West
CNN —  

Airbnb is cracking down on unauthorized house parties after five people were shot and killed at a Halloween party at an Airbnb rental house, the company’s CEO announced Saturday,

The company is banning “party houses,” CEO Brian Chesky announced Saturday on Twitter, in reference to Thursday evening’s shooting.

The company will be “redoubling our efforts to combat unauthorized parties and get rid of abusive host and guest conduct, including conduct that leads to the terrible events we saw in Orinda,” he wrote. The shooting took place in Orinda, California, a town east of Berkeley in the San Francisco Bay Area.

In additional tweets, Chesky detailed the company’s course of action. Anyone found in violation of the upgraded policies could be removed, he said.

“First, we are expanding manual screening of high-risk reservations flagged by our risk detection technology,” he said. “Second, we are creating a dedicated “party house” rapid response team. Third, we are taking immediate action against users who violate these enhanced guest policies, including removal.”

He concluded the Twitter thread by calling the events “unacceptable.”

The shooting occurred during a Halloween party Thursday night. The party, held at an Airbnb rental that specifically prohibited parties, was advertised on social media and had more than 100 people in attendance.

“Arriving officers found a highly chaotic scene that included gunshot victims, injured party-goers, and numerous people fleeing the scene. The partygoers apparently came from throughout the Bay Area for the Halloween event,” a statement from the Contra Costa County Sheriff’s Office said.

Three people died at the scene and two others died at the hospital, according to the sheriff’s office. It’s currently unknown how many were injured.

The sheriff’s office said several of the injured were taken by ambulance to local hospitals by ambulance, while some victims transported themselves to the hospital. The incident is under investigation and no suspects have been arrested, according to the sheriff’s office.