When a complainant mentions a perpetrator of a previously reported crime, what code and sub-type should the calltaker use?

The appropriate code and sub-type to use when a complainant mentions a perpetrator of a previously reported crime is 68Q1,2,8,9 - Perp_Past_Crime - Pre-release. This designation specifically addresses situations where the focus is on a perpetrator linked to an earlier incident, indicating that there's relevant prior criminal activity associated with the individual mentioned.

This classification is vital for law enforcement to understand the context of the call, especially if the complainant is providing information that could relate to ongoing investigations or if the perpetrator is already known to the police due to previous offenses. The "Pre-release" aspect denotes that the information is being gathered in anticipation of pertinent details that could assist in the investigation or understanding of a pattern of criminal behavior related to that individual.

The other codes either focus on different aspects of crime reporting or do not specifically pertain to the connection between a new complaint and a previously reported crime involving a perpetrator. This specificity makes the chosen answer the most relevant for the scenario described.