"Person of Interest" is a term used by law enforcement announcing the name of a person involved in a criminal investigation, it has not been formally arrested or charged with a crime. The term was adopted by the media and widely disseminated, including most of the enforcement of the law have picked up on sight. It has no legal significance, but it is a "catchy" term. "Those responsible for law enforcement say that the term simply reflects the new tactics are needed to combat terrorism. But some legal experts say officials are trying to create a more benign public, as their power grows. " While such concepts as suspected, goals and material witnesses have clear definitions and sometimes formal, one of interest remains undefined by the US Department of Justice. It is often used as a euphemism for suspicion, and can sometimes lead to a trial by media.