The prime suspect in Madeleine McCann’s disappearance has gloated he will never be convicted if the police can’t find the missing Brit’s body. Loading audio...

In newly unearthed letters, Christian Brueckner, 48, mocked German police as he declared, “the dropping of the investigation will hit the world like a bomb.”

The German, who is currently behind bars after raping a 72-year-old American tourist in Portugal, taunted police, asking: “Is there a body? No, no no.”

It comes after police called off their latest search for Madeleine McCann after scouring Brueckner’s so-called “rat run” near his home in Portugal for just three days.

His sick letter came to light as police desperately search for evidence to link him to the girl’s disappearance.

In the letter, published online by the Sun,

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