Liam Neeson's son turned to drugs and alcohol after his mother died.

The 62-year-old actor's eldest child Micheál, 19, has admitted he hit ''rock bottom'' when his famous mum Natasha Richardson tragically passed away six years ago following a nasty ski accident in Quebec and he's only just been able to grieve properly.

Speaking to the Sunday Times newspaper, he said: ''I was going out, partying a lot, looking for self-gratification. I wanted to be the man, doing these drugs.

''Everybody said, 'This kid has lost his mum, that's where the problem comes from.' And I was like, 'No, it isn't, I just like to party.' But looking back, I realise it was a delayed reaction.''

In 2014, Micheál turned to wilderness therapy in Utah and spent months out in the desert in an attempt to get sober following half a decade of out of control partying in New York.

And the youngster, who is now working as a fashion gallery curator, also credits his father for helping him get his life on track.

But he admitted: ''not having the mother figure definitely set the balance of the family off.''

Meanwhile, Liam - who was married to Natasha for 15 years - opened up about his wife's sudden death last year and revealed he still doesn't believe the blonde beauty has gone because he still expects to ''hear her'' voice when the front door opens.