Police swooped in the Paris region and the south of France following the discovery of DNA at the luxury Paris residence where Kardashian was robbed in October, one source said.
“One of the DNA samples matched an individual known to police for robbery and criminal offences, who is considered a major thug,” the source said.
Money and documents were also seized in the raids.
A gang of armed and masked men had burst into the residence in a chic area of the capital where 36-year-old Kardashian and her entourage were staying during fashion week.
The star was tied up and locked in the bathroom and the gang fled with jewellery including a ring worth around four million euros and a case of jewellery with a value of five million euros.
Kardashian broke her silence about the incident this weekend, saying she feared she was going to be killed by the robbers.
“They’re going to shoot me in the back,” Kardashian tells her sisters in a promotional clip for the new season of her hit TV show “Keeping Up with the Kardashians”.
“There’s no way out. It makes me so upset to think about it,” she adds.