Tricky one from the archives: Culpable Homicide not amounting to Murder

Mujhe yeh question khatam karne mein bahut masla aa raha tha, so let's discuss. Question thi: "A public servant causes the death of a person, in the due course of his duty, by doing an act which in the ordinary course of things would not be likely to cause death or grievous hurt, but which, owing to a set of circumstances unknown to the public servant, causes the death. Decide whether it's an offence of Culpable Homicide not amounting to Murder or Murder."

To be honest, this one took me a while to crack. Correct approach is this: Culpable Homicide not amounting to Murder (Sec 299 IPC) applies when there is no intention or expectation to kill.