Reality TV star Kim Kardashian was robbed at gunpoint at a discreet high-end dwelling in Paris, by at least two men dressed as police officers, authorities say.
The haul in the robbery, mostly jewelry, was worth several million euros, police said.
The robbery took place at about 03:00 local time (01:00 GMT).
No one was hurt in the robbery, authorities said.
Other reports put the number of assailants at five, although the spokesman told CNN the robbery was carried out by two masked men with guns.
Kardashian stayed at home at least once before, in 2014, before her marriage.
"The loss amounts to several million euros, mainly jewelry. The overall amount continues to be being appraised," police said.
West was on stage at the Meadows Music and Arts Festival in New York at the time of the robbery. He abruptly ended his set, telling fans: "I am sorry, family emergency. I've to discontinue the show."
It truly is unsure if the couple's two kids, three-year-old daughter North and 10-month-old son Saint, were with Kardashian in the hotel room.
The star was in Paris for the city's fashion week.