remembrance day poppy inside. >> we're unable who constructed -- unable to who constructed the chamber and the motive for it. we're hoping to get information to have direction in solving what did this -- who did this and why. police say they think whoever built the tunnel had to have some experience. so far they don't believe there is any threat to the pan american games. police are on the hunt for two men involved in an apparent home invasion in connecticut. the story does not end there. >> authorities say it was a first step in a bizarre scheme to rob a credit union. we have the latest. >> reporter: detectives in unmarked cars search for clues in this connecticut home trying to figure out the mystery of what happened in this quiet cul-de-sac. >> a bizarre story. >> reporter: investigators say it was early machine morning