A terror suspect in France who allegedly decapitated his boss and took a selfie with the head has killed himself while in prison awaiting trial, The Guardian reports. Yassin Salhi, 35, was arrested in June. He was also accused of attempting to blow up an industrial gas factory. Officials have said Salhi was being held in solitary confinement but was not considered a suicide risk. Salhi also reportedly denied any terrorist connection, asserting instead that he had a falling out with his employer, Hervé Cornara. Two days after an argument, Salhi allegedly strangled him and cut off his head with a knife.