 Police also conducted a routine re @-@ examination of other unsolved murder cases dating back 20 years in areas where Smith had lived . Officers from West Midlands Police held a conference in October 2001 with representatives from several other forces , including Gloucestershire and West Mercia , to share information about unsolved murder cases in their areas . Detectives interviewed Smith three times , but he refused to answer their questions , and no further charges were brought . 
