What is Proximate Cause?

Proximate cause is that cause, which, in natural and continuous sequence, unbroken by any efficient intervening cause, produces the injury, and without which the result would not have occurred.

And more comprehensively, the proximate legal cause is that acting first and producing the injury, either immediately or by setting other events in motion, all constituting a natural and continuous chain of events, each having a close causal connection with its immediate predecessor, the final event in the chain immediately effecting the injury as a natural and probable result of the cause which first acted, under such circumstances that the person responsible for the first event should, as an ordinary prudent and intelligent person, have reasonable ground to expect at the moment of his act or default that an injury to some person might probably result therefrom.

Definition from: Bataclan vs Medina