Police targeted the flat in Saint-Denis in a search for the alleged mastermind of Friday’s gun and bomb attacks in Paris, when 129 people were killed.
The fate of Abdelhamid Abaaoud, previously thought to be in Syria, is still unclear.
Prosecutor Francois Molins said intelligence indicated he was in Paris.
All victims of Friday’s attacks – which targeted a concert hall, cafes and the Stade de France stadium and were claimed by the so-called Islamic State (IS) group – have now been identified, the government said.
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The operation in Saint-Denis – where the Stade de France is located – began at 04:20 (03.20 GMT).