Bab 2145: Vice-Principal

Four days later, the investigation still made no progress.

Other than the police suspecting that female corpse number three might have worked at a nightclub based on the confession of an old pimp, the other aspects were at a standstill.

In the past four days, the police had compared the DNA of a large number of related personnel, including the students, security guards, school workers, and teachers from that year, but they still did not find a match.

According to the DNA test conducted by geneticists, they could not narrow down the range of the DNA map. The criminal was very lucky. None of his close relatives had left any DNA data.

In addition, the 3D image restoration and the missing person case comparison were also difficult and slow to progress.

Including today, the Special Investigation Group led by Zhao Yu had been in Chengzhou for almost half a month. No one had expected the case to be investigated to such an extent.