The French suspect in the killing of three people at the Jewish Museum in Brussels is fighting against being tried in Belgium.
Mehdi Nemmouche's lawyer said after a court hearing in Versailles that "we can't guarantee that my client would be judged better in Belgium than in France".
Lawyer Apolin Pepiezep said that Nemmouche, 29, said he and his client will "defend our position" at another hearing on Thursday.
Nemmouche was arrested at the Marseille bus station last Friday with a Kalashnikov, a pistol and ammunition among his possessions - six days after the killings that also left one person gravely injured.