The attacks were described by President Francois Hollande as an "act of war" organised by the Islamic State (IS) militant group.
Shootings and bomb blasts left 130 people dead and hundreds wounded, with more than 100 in a critical condition.
"Three co-ordinated teams" were believed to have been behind the attacks, according to Paris chief prosecutor Francois Molins.
In the days immediately after the attacks, French police carried out hundreds of raids across the country, as the search for suspects continued. Raids also took place in the Belgian city of Brussels.
This is how the attacks happened