https://twitter.com/jamesclayton5/status/1600619990691954688?s=46&t=AmPgE2mqwqI7Rf2FaMM9jQ

RT@JamesClayton5@twitter.com

NEW: The BBC has obtained pictures of inside Twitter - rooms that have been converted into bedrooms - for staff to sleep in.

The city of San Francisco is investigating as it's a commercial building.

Musk has even installed a wardrobe. We're told he regularly sleeps at Twitter

There are even slippers. Former staff say Elon Musk's room is a converted conference room - and "looks like a hotel room".