Police say an ex-prisoner who was on a watch list for Islamic extremism stabbed a police officer inside her station.
Anti-terror prosecutors are leading probe into murder of 49-year-old unarmed female officer who was stabbed in the neck as she returned from her lunch break; her attacker was then shot dead.
Initial reports said the suspect was a 33-year-old Sudanese asylum seeker, arrested after the stabbings in Romans-sur-Isère in south-east France.
Police in a Paris suburb shot a man dead after he went on a rampage with a knife, killing one person and injuring two others. French officials gave no motive for his attack but believe he would have claimed more lives.
The victim, 62, who survived the attack, was assaulted on Friday morning by a man reportedly known for psychiatric problems who shouted 'Allahu Akbar'.
Soldier in serious condition after being stabbed in southern France by two men who reportedly criticised French airstrikes against IS in Syria.
Police dismissed terror motive in attack on Spencer Stone, 25, who in August disarmed a gunman on an Amsterdam-Paris express.
The 21-year-old was said to have been flagged up to French intelligence services months ago over fears he had been radicalised.