The 80 forensic science police experts carried out several hundred collections of fingerprint traces and DNA in order to gather as much evidence as possible.
This tool was made available to an investigation unit created to deal with the very large number of businesses targeted in the capital.
According to franceinfo, citing the prefecture, 228 Paris businesses were looted among the 450 that suffered damage that weekend.
The proportion of videos deemed usable among the 800 case files already shared is not known. Investigators’ work remains ongoing.
Once collected, the images can be used by the various investigation services concerned. A more conventional investigative effort then begins.
Some perpetrators already implicated in the looting of one business will have to be questioned again about another offense.
The platform allowed local residents who wished to do so, as well as passers-by, witnesses and any citizen, to send images and videos to investigators.
In Paris, volunteers must identify themselves, notably via the FranceConnect online service.
Elsewhere in France, the authorities also asked citizens to send their videos. In the Var, police released an email address for submitting photos and footage of the lootings.