Rapper Lupe Fiasco is convinced he was visited by aliens during his youth - and he has an unexplained scar on his ankle to prove it.

The Show Goes On hitmaker claims he was woken by extra-terrestrials, who landed their spaceship outside his Chicago, Illinois home and beamed a ray of light into his bedroom.

During an recent interview on U.S. radio station Power 106 Fm, he said, "When I was 11, I definitely had an extra-worldly experience. (But) I remember waking up and just being shocked, like I was surrounded by all this electricity.

"I was trying to call and wake my cousin up and roll out the bed and I couldn’t move. And then I was surrounded by this blue electricity... I'm trying to move, I'm really getting shocked, I really feel it. So it stops and I look out the window and I see a black disc fly down in front of the window, (it) sits there and then flies out."

And Fiasco insists he still has a physical reminder of the experience: "I got a scar on the bottom of my ankle, and I don't know where it came from - I never had surgery there, I never remember falling there."