RAF members DNA found at robbery in 2015

So yeah In Germany last year an armoured money transport was attacked by men with AR's and even an RPG, The robbery failed, but what's most striking is, the fact that at the scene they found DNA of former RAF members, although it's not mentioned whom.

source: http://www.nwzonline.de/politik/niedersachsen/spuren-nach-raubueberfall-bei-bremen-weisen-zur-raf_a_6,0,3117449843.html