The gunman - who is understood to have been armed with an M5 assault rifle - blasted the officer.
France's top security official Bernard Cazenueve said Ms Jean-Philippe - a trainee police officer from the island of Martinique and who 'dreamed of serving her country', according to Paris Match - had stopped to investigate a traffic accident when the firing started in the southern suburb of Paris.
The street cleaner who was shot in the face was one of two men who tried to grapple with the man during the incident.
The cleaner was said to be in a serious condition by one police source, while another said emergency services had tried to revive Ms Jean-Philippe at the scene 'but she was in a very bad way'.
Another witness, William Thomas, a 19-year-old who lives close to this morning's attack, said: 'I was woken up by the first three shots.
'Then I heard someone shout "Take that" and there were another two shots. It was before 8am.'
The automatic gunfire was followed by the arrival of numerous special operations police, accompanied by emergency services.
A man who appeared to be of North African origin was seen running away from the scene. He was thought to be wearing a bullet proof vest.
'Emergency workers tried to revive the woman officer at the scene but she was in a very bad way,' an officer at the scene had said earlier.