The case of Omar Raddad, an illiterate Moroccan gardner convicted of killing his wealthy employer in 1991, could be reopened after new DNA strands were discovered at the scene of the crime in Mougins near Nice.
A Serbian man who was one of more than a dozen convicted in the 2009 murder of a French football supporter was arrested in Athens on Saturday, Greek police said.
French prosecutors have reopened a case in the 1979 death of French cabinet minister Robert Boulin.
Four people were killed in a shooting at a travellers' camp in Roye, northern France, on Tuesday afternoon. Another toddler wa seriously wounded, as was the gunman.