Following a shooting during a Halloween party at a Californian house rental, the family of one of the five young people killed is suing Airbnb, claiming the company should been aware of large crowds, underage drinking and illegal activities at the property.

The man’s mother and sister are also suing the property owners, who they say were warned many times about breaking local regulations on how many people can occupy short-term rentals.

The shooting led Airbnb to identify and ban “party houses” from its platform by the end of this year, and said it would create a 24/7 hotline for neighbours concerned about house rentals.

Five were killed and five injured at what was advertised on social media as a “mansion party” attended by an estimated 100 people, and the lawsuit claims both Airbnb and the property owners should have known a tragic result was likely to occur following previous trouble at the same house.