French President Francois Hollande is holding an emergency meeting with senior officials after a man pledging allegiance to so-called Islamic State stabbed a policeman to death outside his home near Paris, before killing his partner.
The killing has been described as a "terrorist attack" by the French government.
Prime Minister Manuel Valls, Interior Minister Bernard Cazeneuve and Justice Minister Jean-Jacques Urvoas gathered in the presidential office on Tuesday morning.
Mr Cazeneuve is to visit the two suburban police stations where the two officers worked following the meeting.
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