Airbnb's boss announced Saturday that the online platform, which offers private homes for rent for short periods, is banning "party houses" after a deadly shooting at a Halloween event in California.

Five people were killed and others wounded in a Thursday night shooting in Orinda, California, in a house that had been rented on Airbnb. More than 100 people were present at the event, which was announced on social media.

"Starting today, we are banning 'party houses' and we are 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," Airbnb co-founder and CEO Brian Chesky said on Twitter.

