A Frenchman who killed his boss and pinned his severed head to a fence at an industrial gas factory has committed suicide in his jail cell, ABC reported quoting prison authorities on Wednesday.

Yassin Salhi, 35, hanged himself from the bars of his cell using his bedsheets on Tuesday night, according to authorities at Fleury-Merogis prison, in the southern suburbs of Paris.

The driver and deliveryman carried out the grisly attack on employer Herve Cornara in Isere, southeastern France in June, displaying his boss's head outside the plant surrounded by Islamic flags.

He tried to blow up the facility but was arrested and remanded in custody.

Salhi had been placed in solitary confinement but was not considered a suicide risk. He had always disavowed any religious motive for his crime, but prosecutors were pressing charges of terrorism.

The married father-of-three was born in the eastern French town of Pontarlier, near the border with Switzerland, to a father of Algerian origin and a mother with a Moroccan background.

Source: MENA