Garden state mall shooting

Its a sad feeling when we see these tragic events happen in other states but its sad and terrfying when it happens close to home. I have been to this mall a thousand times never thought something like this would happen..its tooooo close to home and my stomach is in knots!! What i dont understand is where is the gunman!! Surveillance camera everywhere yet we dont know for sure if he left or  is still at the mall.. Media which i rarely believe.. But interview several witnesses who say they saw more than one person, a group walking around shooting in the air but not wanting to hurt anyone.. Police say he/she left yet they r still doing a store to store sweep and frisking everyone!! Hmm!! Makes me question is the gunman still there or is the police/government doing an exercise!! Dont know who to believe anymore!! And as im writing this i hear in the news they have the gunmans cellphone and they r holding eyewitness who witness what happen and dont want them talking to the press!! This is beyond crazy!!! Not a safe world!!