Yassine Salhi

French terror suspect took selfie with beheaded victim

French investigators were working to determine the recipient's identity, but weren't able to immediately confirm media reports that it was an unspecified person now in Syria, where the radical Islamic State group has seized territory, the security officials said.

The revelation added a macabre twist to an investigation that has not turned up a solid link to radical or foreign groups, but has revived concerns about terrorism in France less than six months after deadly attacks in the Paris area.

The Latest: French police identify gas factory attacker

He says the man in custody, Yassine Salhi, is a resident in his 30s of the Lyon suburb of Saint-Priest.