After discovering this, the police also found something in the investigation of the case.
Among the items was a handbag that the victim had with them when they were attacked.
However, when they questioned the gang leader about it, he deliberately responded in a flippant manner using a slang he had learned from movies.
"No way, sir, you know that area is our turf, right? The guys under me just happened to find this thing. When we found it, it was empty, just a handbag. If you like, you can take it and have fun with it."
The gang leader's contemptuous attitude was infuriating.
But without direct evidence, the police couldn't arrest him.
Now, documents from above emphasize the integrity and transparency of the interrogation process.
Forced confessions and the like were not allowed, and this is what is called procedural justice.