Four-time Olympic champion Mo Farah revealed he was taken from his family in Somaliland when he was 9 years old and trafficked to the UK under a different child’s name.

The legendary long-distance runner was brought into England illegally from Djibouti and was forced to do housework and childcare in exchange for food, he said in a preview clip from the upcoming BBC documentary, “The Real Mo Farah.”

“The truth is I’m not who you think I am,” he said in the documentary which will be broadcast this week.

The 39-year-old father-of-four revealed his real name is Hussein Abdi Kahin.

Farah, who became the first British track and field athlete to win four Olympic gold medals, said his children motivated him to be truthful about his past.

Read more here.