Despite the threat of criminal conviction having been lifted , Roewer was still called upon to testify to parliamentary commissions of enquiry into the handing of the National Socialist Underground affair ( " NSU murders " ) . As a witness he was neither willing nor co-operative : at one stage , in an interview reported in 2013 , Roewer compared his appearances before one enquiry commission to a Stalinist show trial . He filed two criminal complaints against former colleagues on grounds of alleged false testimony
affair ( " NSU murders " )
National Socialist Underground murders
Helmut Roewer