andrew and his fiancee catherine. we want to begin with new details tied to the disappearance of the kansas city baby lisa irwin. peter alexander is covering the case for us. peter, good morning. >> reporter: ann, good morning to you. last night kansas city police told nbc news that the attorney for baby lisa's parents had abruptly cancelled two scheduled reinterviews with two potential witnesses in the case -- baby lisa's half-brothers who were said to be sleeping in the home the night her parents say the little girl disappeared. the boys told their mom who told me they heard noises that night that were never explained. there is no new date scheduled but the search reached day 25. could the murky waters of this small lake hold secrets to baby lisa's disappearance? less than two miles from the irwin family home investigators expanded the hunt for clues to this never before searched park thursday with a raft and cadaver dogs. >> if there is a body in the water would a dog be able to smell that? >> if we can put them in a place to pick up the scent, yes, they will pick it up. >> reporter: police left empty-handed and nearly four