The Paris Police previously arrested 27-year-old Gary Madar, who worked for the chauffeur company that drove Kim Kardashian around while she stayed in Paris.
Gary was arrested along with his older brother, Michael, the CEO of the company.
While Michael and two other suspects have been released, Gary remains in custody as he is yet to be cleared on the case.
Michael, who was unaware that his brother had even been picked, has expressed his shock and grief.