Reality TV star Kim Kardashian has returned to New York "badly shaken" after being robbed at gunpoint in her Paris residence by masked men who stole some US$10 million (NZ$13.7 million) worth of jewellery from her.
Kardashian, wearing sunglasses and with her head bowed, was pictured entering her Manhattan apartment with her rapper husband Kanye West on Monday (local time).
She had left Paris by private jet hours after robbers tied her up in the bathroom and put a gun to her head.
Kardashian, who her publicist said was "badly shaken but physically unharmed," said nothing to waiting media upon her arrival.
"What happened is very unfortunate and those responsible must be severely punished," French Foreign Minister Jean-Marc Ayrault told TV5 Monde.
"We are fully mobilised to ensure the safety of the French people, as well as all those who visit France, and in particular tourists."
A Paris police source earlier told Reuters that five attackers, wearing ski masks and clothes with police markings, struck early on Monday morning (local time) inside the exclusive apartment block where Kardashian, 35, was staying while attending Paris Fashion Week.
Two of the men entered Carpathian's apartment after threatening the night guard with a hand gun. Kardashian, who has two young children with husband-rapper Kanye West, was not beaten but the robbers put a handgun against her temple before tying her up, the source said. iTELE television said she had been tied up with packing tape.
E! News, whose US network broadcasts Keeping Up With the Kardashians quoted a source close to Kardashian as saying she feared for her life.
"She begged for them to let her live and (said) she has babies at home... She thought they were for sure going to kill her," the unidentified source told E! News.
The robbers stole a box containing jewels worth €5 million to €6 million (NZ$7.7 million to $9.2 million) and a ring worth about €4 million (NZ$6.1 million), the Paris police source said.
As news of the robbery spread, West abruptly ended a performance in New York less than an hour into his set on Sunday night.
The robbery set social media alight, with some users making fun of the latest headline-grabbing event in the life of a TV star who documents her life continually on screen and on social media.
Paris has seen several armed robberies on high-end jewellery stores in recent months and the Kardashian incident could add to worries about safety in Paris, hit by a series of attacks by Islamist militants last year.
Paris traditionally is the most-visited city in the world, but tourist numbers fell 6.4 percent in the first half of 2016 as many Asians and Americans stayed away.