Group in the entrance of the Heidegroeve

O.D. people and one person who was in hiding before, some days after the liberation of Valkenburg, september 1944. The Heidegroeve on Plenkert street?
Was this the group that hunted for collaborators? In any case, Jan Harings is standing in between, with the number 1 above his head.
Not in the picture: Ben Koster, although he was sympathising with the O.D.. But not with this kind of?
Photo: Frans Hoffman