A BBC investigation has uncovered exactly what happened to $10m sent from Fifa to accounts controlled by its former vice-president, Jack Warner.

The money, sent on behalf of South Africa, was supposed to be used for its diaspora legacy programme in the Caribbean, and is central to the scandal that has engulfed world football.

But the BBC can reveal that in fact most of the money went straight back to Mr Warner and his associates through a series of transfers and money laundering schemes.

Ed Thomas reports from Trinidad.