The Metropolitan Police are investigating a suspected double rapist in a case involving two attacks on women separated by four years. Police say they are pursuing a man they want to speak to and have circulated CCTV images as part of their enquiries. In parallel, investigators use DNA evidence to identify potential family links. According to reports, the work involves examining a list of men who share familial DNA with the suspect. This list is compiled by the National Crime Agency (NCA). Sky News also reports that DNA is taken from people across the UK as part of the identification effort, aimed at tracing the suspect through genetic matches. Another account describes detectives attempting to trace relatives connected to the suspected attacker using DNA rather than relying only on eyewitness or forensic leads. While the sources differ in emphasis—some focusing on CCTV appeals and others on DNA methods—they broadly agree that police are using a combination of public-facing identification materials and DNA-based familial tracing to locate the individual responsible for the two alleged rapes.