Since then, the provincial bureau even organized a special training session on the matter.
However, no matter how many similar cases there have been or how many training sessions, a crime scene after a heavy rain has always been a difficulty in crime scene investigation.
But the case from three years ago made investigators more cautious when examining post-rain scenes.
After all, the handkerchief from that year actually left traces to follow.
According to the crime scene photos, there were clear signs of soil wash on the handkerchief.
There were also some dried grass adhered to it.
When it was discovered, half was in the pocket and half was outside.
If the handkerchief was initially in the pocket, the likelihood of soil wash and adhering dried grass would not be high.
But when handling a case, most people have an eager expectation to solve it quickly.
Having such a significant clue encourages the investigating detectives in ways difficult to express in words.
