French investigators have released a chauffeur for Kim Kardashian West and two other people in their probe into the robbery of more than $10 million (£8m) worth of jewellery from the star’s Paris apartment in October.

The driver’s brother and 13 others remained in custody on Wednesday after a round of arrests this week, according to the Paris prosecutor’s office.

Authorities are focusing on the possibility that the robbery was an inside job.

Kim Kardashian
Kim Kardashian (Jonathan Brady/PA)

Officials say brothers Michael Madar, 40, and Gary Madar, 27, worked for the same car service company and were among those arrested on Monday. One of them is believed to have driven Kim on the night of the robbery.

French officials did not name the three people they freed.

The suspects arrested on Monday ranged in age from 23 to 72 and included several people known for prior robberies and other crimes, according to a police document seen by the Associated Press.

Kim Kardashian
Kim Kardashian West and Kanye West (PA)

A French investigating judge may travel to the United States to speak to Kim.

The jewels have not been recovered. In neighbouring Belgium, the Antwerp prosecutor’s office would not comment on reports that the stolen goods might have been smuggled to the city, a major jewel trading centre.

Thieves are believed to have forced their way into the private apartment where Kim was staying during Paris Fashion Week, tied her up and stolen the jewellery.

Kim has not commented publicly since Monday’s arrests.