Defending champions Paris St-Germain were knocked out of the Coupe de France after a stunning 1-0 home defeat by Paris FC.
PSG, who lifted the trophy for a record 16th time last season, dominated possession but were undone by their newly promoted city rivals.
Former PSG academy product Jonathan Ikone scored the decisive goal, timing his run perfectly to finish on the counter-attack.
Luis Enrique’s side pressed throughout the match, yet Paris FC goalkeeper Obed Nkambadio produced a series of outstanding saves, including a crucial injury-time stop to deny Vitinha’s long-range effort.
PSG lost 1-0 at home.
The loss marked PSG’s first elimination at the last-32 stage of the competition since 2014.
The two sides had met earlier this month in their first top-flight derby since 1990, when goals from Desire Doue and Ousmane Dembele secured a 2-1 league victory for the Champions League holders.