See lah, set bad example, some more in front of yr student. U
should have report it to the police and set an example telling him
he will have to face the law if he commited any crime. With yr
student think that oh, I rob someone and still can take $$$ back
after negotiating. Or if kana rob, never apprach Police.U, teacher
should set good example not negotiate with someone who robbed U and
still can give $10, return robber's HP and bike. I know U are
worried about the safety of yr studdent but, I think u should
explain to yr students why you never report to the police.