Canada : U.S. officials searching databases and communications for possible clues . `` The questions we need to ask ourselves ( include ) , 'How are these people getting this crazy ideology that 's inspiring them to do these copycat killings ? ' A plainclothes constable detailed to Parliament was shot in the leg , official said . Canadian army reservist Cpl . Nathan Cirillo was killed at the Canadian War Memorial . Police give standing orders to Parliament official credited with stopping gunman .
Canada : U.S. officials searching databases and communications for possible clues . A plainclothes constable detailed to Parliament was shot in the leg , official said . Canadian army reservist Cpl . Nathan Cirillo was killed at the Canadian War Memorial . Police give standing orders to Parliament official credited with stopping gunman .