In an interview with reporter Anderson Cooper, Liam Neeson has opened up about his wife Natasha Richardson's death five years ago.

As part of the 60-minute interview series on CBS, Neeson tells Cooper about when he was told that his wife was brain dead, after she suffered a fatal blow to the head during an accident.

Natasha had been skiing in the Canadian resort of Mont Tremblant, near Montreal, when she fell at the bottom of a beginners' ski slope. Despite the fact she wasn't wearing a helmet, the accident seemed innocuous and she was even laughing and joking afterwards. She hadn't even hit anyone or anything as she fell.

In the candid talk, Neeson also reveals how him and his wife had made a pact that if "either of them ever got into a vegetative state, that [they'd] pull the plug". He also discussed how they donated her organs, her heart, kidneys and liver, and currently she's "keeping three people alive".

Liam Neeson opens up about wife's death