Last month's jewellery heist at the Louvre museum was carried out by petty criminals rather than organized crime professionals, Paris's prosecutor has said.

This is not quite everyday delinquency... but it is a type of delinquency that we do not generally associate with the upper echelons of organized crime, Laure Beccuau told franceinfo radio.

She said four people arrested and charged so far over the theft that shocked France and the world were clearly local people living in Seine-Saint-Denis, an impoverished area just north of Paris.

Jewels worth €88m (£76m; $102m) were taken from the most-visited museum, in the French capital, on 19 October.

In Sunday's interview to franceinfo radio, Beccuau said the four arrested people - three men and a woman - all live more or less in Seine-Saint-Denis.

She said two of the male suspects had been known to the police, as they each had multiple theft convictions.

On Saturday, a 38-year-old woman was charged with complicity in organized theft and criminal conspiracy with a view to committing a crime.

Separately, a man, aged 37, was charged with theft and criminal conspiracy.

The suspects - who have not been publicly named - both denied any involvement.

Investigators believe four men carried out the daylight theft, and one of them is still on the run.

During their heist, the suspects utilized a stolen vehicle-mounted lift to gain entry, aiming for the Galerie d'Apollon. Within just four minutes, they managed to access display cases and escape on scooters before transferring to getaway vehicles.

Despite one item being dropped during their hasty exit, authorities express hope of recovering the remaining jewels, believed to have been swiftly moved abroad.

In the wake of this shocking theft, security protocols around France's cultural institutions have been thoroughly reviewed and significantly tightened.