The lesser charge of manslaughter requires a killing through "act, procurement or culpable negligence" which can be established with less evidence of bad motive.

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To let this fall away or fall apart would be culpable negligence on the part of the group of people on whom the rest of us have to rely.

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Mr Raghuvanshi said on Sunday that the nine would be formally charged with culpable homicide and causing death by negligence, once the investigation into the accident had been completed.

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