Police were searching a house in Val-de-Marne, south of Paris, on suspicion of drug possession when the discovery was made. The Picasso painting has not been made public, but the Créteil prosecutor's office said the painting has been authenticated and is estimated to be worth tens of millions of euros.
Cannabis, valuable designer clothing and large amounts of cash were found in the raid in addition to the artwork.
On Friday, four people were brought before a court for immediate trial. The prosecutor's office told the newspaper Le Parisien that an investigation into theft and receiving stolen goods had been opened following the discovery.
