Here in clark county, nevada there is a meth task force that is known to be a bit rogue. My question pertains to my role as a suspect in a lab fire/bust. Can these Dect.'s make unannounced interogations/search visits to my home or any other suspect's home? One person was arrested that morning and has already been charged and sentenced in connection to the episode. How long can an investigation remain open and when do charges, if any, need to be filed? One more thing. How heavy do affidavids weigh in this process?