Investigators working on Madeleine McCann's mysterious disappearance are following an "important" new lead in the case, Breaking Celebrity News has learned.

According to The Sun, a tip "has strengthened the theory that she was kidnapped and trafficked," with a source adding that it "could provide an explanation on whether Madeleine was abducted and transported away."

As Breaking Celebrity News readers know, McCann went missing from a resort in Algarve in 2007, when she was just three-years-old.

Parents Gerry and Kate McCann believe their daughter is still alive, working tirelessly with investigators to find answers and refusing to "give up" hope.

Kate previously revealed instincts of her daughter's whereabouts, stating that the Praia da Luz resort where she first went missing is "where I feel closest to her."

"That's where she last was and I don't think she's been taken a million miles from there," Kate said, though thousands of alleged sightings of Madeleine have been reported around the world.