Airbnb bans 'party houses' after five die in Halloween shooting

CEO Brian Chesky said in a tweet the company would take steps to "combat unauthorized parties and get rid of abusive host and guest conduct".

"We must do better, and we will. This is unacceptable," Mr Chesky added.

Three people died at the house, in the city of Orinda, near San Francisco, and two more died later in hospital.

Ariana Grande can't keep her cool in Ellen DeGeneres' haunted house

Armed with Ellen DeGeneres' executive producer Andy LassnerAriana Grande stepped into the American Horror Story Maze at Universal Studios Horror Nights prepared for a sight—and more than a few frights. 

Killer clowns, spooky skeletons and a bevy of other creepy creatures lurked around every corner waiting to catch the pop singer when she least expected it.