Answer: The investigator are wrong to be confident in their arrest because their is no perfect match in the finger print of the person been arrested and the one gotten from the crime scene. Because their have failed to compare the finger prints pattern seen in their records, to the one gotten from the crime scene.
The investigators are wrong in their arrest because one finger that has a whorl and loop fingerprint pattern cannot produce two different finger print pattern, which was gotten from the crime scene.
Another reason why the investigator are incorrect with their arrest is because, the crime record of the man arrested is very different from the crime committed. They should have traced the people with similar crime records, that has a similar finger prints with the one gotten from the scene.