Kim Kardashian has been tied up and held at gunpoint in Paris by robbers who stole millions of pounds worth of jewellery.
The five armed, masked men carried out their raid at about 3am local time.
Police said they tied Kardashian up and locked her in the bathroom before escaping on bikes. They remain at large.
The concierge let the robbers into the building near the historic Madeleine Church in the 8th arrondissement, police said.
He then apparently led them to Kardashian's flat at gunpoint after being handcuffed.
A police official said a jewellery box had been taken containing a ring worth four million euros (£3.5m), as well as other valuables worth six million euros (£5.2m).
It happened as Kardashian attended the French capital's fashion week.
She was "badly shaken but physically unharmed," a spokeswoman said.
Kardashian has now reportedly left France after talking to detectives.
The apartment block is close to the Elysee Palace and British Embassy.
"Only stars stay there," said a waiter at a cafe opposite. "Kanye West, Jay Z.
"Kim Kardashian has been there for a week, I have seen her coming and going."
She also stayed there before her wedding to rapper Kanye West in 2014.
Police were seen guarding the entrance on Monday.
West cut short a concert in the US following the incident.
The 39-year-old stunned fans at Meadows Festival in Queens, New York, when he abruptly ended his set during his 2008 hit Heartless.
In footage shot by fans, he is heard saying: "I'm sorry, I have a family emergency. I have to stop the show," before walking off stage.
It has not been confirmed whether Kim and Kanye's children - North, three, and Saint, nine months - were with her at the time.
Kardashian, 35, had been photographed on Sunday evening at a Givenchy fashion show with her sister Kourtney and mother Kris Jenner, and was later reportedly seen out for dinner at a local restaurant.
Last week, also in Paris, Kardashian reportedly filed a police complaintafter she was ambushed by a prankster as she entered a restaurant. [[news.sky]
