In the end we find that the body of fritz is still present at the place where Jayanto buried it when he was 5 years old. It shows that the activities that Jayanto experienced in Bundi were counducted by Fritz. Therefore, it can be concluded that Fritz was a human and after his death he parted a role similar to a ghost.
Was Fritz a human or doll?
Answer : Fritz was an ordinary doll which Jayanto, the protagonist in the story, got from one of his uncles. His uncle had brought it for him from Switzerland. It was a twelve-inch-long figure of an old man. It was dressed in a traditional Swiss style.
Was Fritz real?
Answer: Fritz was a doll, actually its a story written by satyajit ray depicting supernatural powers.