French president Emmanuel Macron has called for calm after a Corsican independence figure died of his injuries following a prison attack, reports Euronews.
Yvan Colonna died on Monday evening in a Marseille hospital, three weeks after he was assaulted by another prisoner.
The nationalist figure had been serving a life sentence for the 1998 murder of Claude Érignac, a senior Corsica official.
Colonna -- who had always denied the charges -- was arrested in 2003 after a five-year manhunt that eventually found him living as a shepherd in the Corsican mountains.
According to investigators, the 61-year-old was strangled by a "jihadist" inmate at the prison gym in Arles on 2 March and was left in a coma.
A 36-year-old -- who had been imprisoned for "terrorist criminal association" -- had been charged with attempted murder.