The suspect, Su Moufu, was arrested for stealing over 200 pieces of jewelry worth more than 300,000 yuan from a gold store in Guangxi. During the investigation, police noticed his footprints, which matched those from a 15-year-old unsolved murder case. This led to the discovery that Su was involved in the killing of a man named Li in 2005.
Su Moufu's footprints were compared to bloodied footprints found at the scene of the 2005 murder. The unique patterns and details of the footprints matched, leading police to conclude that Su was one of the perpetrators of the crime.
Police tracked Su Moufu by analyzing surveillance footage, which showed him wearing distinctive white sneakers with reflective strips. They traced his movements through taxi records and eventually located him using his phone number from a ride-hailing app.
Su Moufu and his accomplice, Tang Moulin, committed the murder during a burglary. They broke into a home, encountered the homeowner, Li, and killed him to avoid being reported to the police. The crime was driven by their desperation after running out of money.
The 2020 gold store theft case exposed Su Moufu's past crimes when police compared his footprints from the theft scene to those from the 2005 murder case. The match led to further investigation, revealing his involvement in the earlier crime.
Technology played a crucial role in solving the 15-year-old murder case by enabling precise comparisons of Su Moufu's footprints and fingerprints with evidence from the 2005 crime scene. Advanced computer systems confirmed the match, leading to his identification as a suspect.