Three policemen reprimanded for chaining man to power generating set

It sounds like a disturbing and unacceptable incident. Here's a summary of the situation:

Three policemen in [location] have been reprimanded for chaining a man to a power generating set. This is a serious violation of human rights and a breach of professional conduct. The policemen's actions are unacceptable and inhumane.

Can you tell me more about the incident? What was the context and circumstances surrounding the chaining of the man? Was he a suspect, a prisoner, or a civilian? And what was the reason for the reprimand? Was it a formal investigation or an internal disciplinary action?