I believe you should have the proper credentials or training to torture someone in order to extract information. On the other hand I believe that if you have been and are acting suspicious and have been already caught in a couple of lies, which would have some significance to the safety and well being of people and property, then you are asking for trouble. There may also be room for civil rights to claim that information, discovered under torture, is inadmissible in court and cannot be used to incriminate you. This would be like obtaining evidence without a warrant..

2 cents worth