SIR Mo Farah's mum has revealed the reason she sent her son away as a kid, only later to discover he was made a child slave.
Aisha Kahin only sent little Mo, then nine, and identical twin brother Hassan away to escape civil war-ravaged Somaliland and give them a better chance at life.
But she had no idea the untold hell her future five-time Olympian child would be met with as he was trafficked and forced to work as a slave for a family in London.
Speaking on BBC documentary 'The Real Mo Farah', she explained how she left her two sons to stay with an uncle in neighbouring Djibouti, but had no idea Mo was trafficked to England.
Staring into her son's eyes, she told Mo: "No one told me, I lost contact with you.
"We didn't have phones, roads or anything. There was nothing here. The land was devastated.
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"I knew you left but I had no idea where you were exactly."
Brother Hassan chimes in, noting: "They told us that night we would all go together... When I went to sleep, they put you on a train."
When Hassan woke, Mo was gone. Hassan remained in Djibouti with the uncle.
Mo's real name was Hussein Abdi Kahin which his mum still calls him, but the trafficking family would change his name to Mohammed Farah.
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Sir Mo, 39, believes there was another trafficked child of the same name who he took the place of.
The running legend wouldn't see his family for ten years until tracking his family down through the help of a woman in London.
The comments from his mum come as the British athletics legend revealed all about his real life in the shock documentary.
In it, the married dad-of-three said: “There’s something about me you don’t know. It’s a secret that I’ve been hiding since I was a child.
“I’ve been keeping it for so long, it’s been difficult because you don’t want to face it. Often my kids ask questions — ‘Dad, how come this?’
"And you’ve always got an answer for everything, but you haven’t got an answer for that.
“That’s the main reason in telling my story because I want to feel normal and not feel like you’re holding on to something.
“To be able to face it and talk about the facts, how it happened, why it happened, it’s tough. The truth is I’m not who you think I am. And now whatever the cost, I need to tell my real story.”
Sir Mo — who has decided to keep his assumed identity — fears he could be stripped of his British citizenship for giving false details in his application.
But the Home Office confirmed the four-time champ will face no action.
A spokesperson said: “No action whatsoever will be taken against Sir Mo and to suggest otherwise is wrong."
The 2012 Olympics legend, knighted five years ago, had always insisted his father was an IT consultant called Muktar who was born and brought up in London.
He claimed his dad then moved to Mogadishu and met his mother before returning to the UK, followed by his son when the Somalian civil war deepened.
However, his father was actually a farmer called Abdi who was killed in the conflict when his son was four.
His mother Aisha later sent him to neighbouring Djibouti for his safety.
She wanted him to be reunited with his twin brother Hassan.
Instead one of his own relatives may have helped to illegally traffic him to the UK, through a mystery woman.
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He said: "The hardest thing is admitting to myself that someone from my own family may have been involved in trafficking me."
On Wednesday the Metropolitan police launched an investigation into claims by Sir Mo that he was trafficked into the UK and forced into domestic servitude.