Not necessarily, although there wasn't enough to convict those folks *honestly*.
There was zilch *evidence* to support that, which is why he wasn't convicted. However his name was *very* publically dragged through the mud by the politicians, and that made him a political prisoner.
He was convicted of drug-trafficking on the basis of him being sat in a police informant's car that was carrying drugs (placed there by agreement between the officers and the informant). There was no evidence of Muniz being "engaged in drug trafficking", it was guilt by association.
If you ****** someone off enough you could be framed that way yourself, it wouldn't be the first or last time that happened either. There's a lot of political background to the Muniz case.
Rather strange that no charges were brought seeing as it was such a clear cut case isn't it ? Any ideas why that might be ? Any idea why Saudi Arabia would demur at punishing the guy ? They don't have a reputation for mercy or squeamishness. Again the guy was a political prisoner, detained without charge and forcibly repatriated.
Far fewer than there used to be and that's a good thing, although the Government is trying to replace them with Muslims instead.
Political prisoners are frequently framed for crimes other than political dissent in order to get them off the streets.