sentences:  He refused to comment on the incident for the moment; then filed a complaint with the Capital Police and gave an interview in which he said he received anonymous letters threatening him and his family.A group of NGOs addressed an open letter to Prime Minister Victor Ponta asking for his physical integrity and the start of an investigation.They express "deep concern about the media attacks directed against the National Council for Combating Discrimination (CNCD), respectively the psychological and physical, but also the media," to the president of this institution.