I spoke a little too fast.
The following link, in French, is about this Ju 88 and tells that the crew were captured and mishandled by the French crowd. They were liberated after the arrival of the German troops and on 22 June came back to the site where they were beaten and two men, probably innocent, were arrested. One was later shot by a firing squad while the other was deported.
Source:
http://absa39-45.forumpro.fr/la-luft...-1940-t295.htm
I will now guess that there should be a trace of this in gendarmerie reports, and maybe German papers about the process survived too.
Best regards
Laurent