Edwin Greco Wylie-Biggs, 36, was sentenced to an extra three to six years in prison after officers strip-searching him found a blue balloon containing K2 (synthetic marijuana) sticking out of his rear end.

However, Mr Wylie-Biggs challenged the conviction on the basis that the officials at the prison in Pennsylvania didn’t prove it was his.

Dismissing his appeal, Senior Judge William Platt said the state had indeed provided sufficient evidence that he had an illegal substance.