South Korean criminal justice system has established the exclusionary rule since 2007. A number of convictions have been quashed on the basis of this rule. Such circumstances lead to a change in practice, in particular, criminal investigation.
One significant example of the exclusionary rule is a judgment that excluded evidence, blood alcohol content, which was obtained without consent or a warrant even though the suspect was under unconsciousness. Under these circumstances, criminal investigators are wondering how they can obtain legally appropriate evidence and what criminal procedure their operations are based on. * Lecturer, Department of Police Science, Korean National Police University
This study, firstly, has explored the compulsory sampling of blood. Then, based on a judgment by the Supreme Court, I have examined whether a post-warrant can be an alternative. To analyse current situations in South Korea, a comparative research method has been mainly employed. Japanese system of criminal justice can be a significant comparator because it has a similar system.