FONTAINES-SUR-SAONE, France (AP) — Officials say the top suspect in the beheading of a French businessman took a "selfie" photo with the slain victim and sent the image to at least one recipient.

Two French officials said authorities were working to confirm the identity of the recipient, but were not able to immediately confirm media reports that it was sent to an unspecified person in Syria.

On Friday, key suspect Yassine Salhi allegedly crashed a truck into an U.S.-owned chemical warehouse and hung his employer's severed head on a factory gate in Saint-Quentin-Fallavier — in what authorities are calling a terror attack.

He was arrested and remained in police custody on Saturday.

Authorities noted the similarity to tactics used by the Islamic State group, though no group has claimed responsibility for the attack.