According to police, five men involved in the attack. Three people watching and two people in a luxury apartment Kardashian. American reality show star was tied up and locked in the bathroom.
The French police said there were traces of DNA left on objects that bind actors Kim. The perpetrator also left her pendant on site.
Police conduct raids on Monday in the area of Paris, Rouen and Nice. Performers aged between 23 to 73 years. Investigators have interrogated them for more than 96 hours.
"The DNA samples matched with people who are already known to the police for robbery and criminal," police said.
The French team also tapped phones perpetrators and track gang meeting that a potential buyer of jewelry Kardashian. In the robbery, Kim lost jewelry worth 10.5 million US dollars.