What is unsolved cases?

Unsolved cases is also known as a cold case which has not been fully solved due to a few circumstances such as not having enough evidence or proof to capture the criminal, lack of public cooperation or even overlook the evidence that had been found during the investigation. Unsolved case is a case that is not fully solved, therefore new information could emerge from a new witness. Thus, investigators would have to re-examined what had been found as well as new suspect would be targeted. Therefore unsolved cases could still be under investigation even though the case has been years remained unsolved.