NEW : He said the alleged arsonists shouted at patrons to leave the casino as they set it on fire . Witnesses recount gunmen shooting patrons , hurling grenades . Authorities say suspects told them civilians were not their target . The casino fire left five dead and shocked the United States . inferno officials showed off 52 suspects to reporters Saturday .
NEW : Witnesses recount gunmen shooting patrons , hurling grenades . Authorities say suspects told them civilians were not their target . The casino fire left five dead and shocked the United States . inferno officials showed off 52 suspects to reporters Saturday .