The chairman of the Brazilian Olympic committee has been arrested as part of an investigation into alleged buying of votes to secure Rio's hosting of the 2016 Games.
Carlos Nuzman, 75, was arrested on suspicion of corruption, money laundering and criminal association.
Following an investigation dubbed "Unfair Play" that spanned several countries, Brazilian officials last month said Nuzman was the "lynchpin" in a plot to bribe the International Olympic Committee into awarding Rio de Janeiro last year's summer Games.
Authorities allege that former Rio governor Sergio Cabral, who is serving a 14-year prison term for bribery and money laundering, was the mastermind of a plot that saw $2 million in bribes paid to the son of Senegalese IOC member Lamine Diack before the 2009 vote that saw Rio win the 2016 Games.
Those working in sport are like anyone else in any other line of business: there may be times when accusations of bribery are made.
If that is the case, anyone facing such allegations must compile all available material – including any that the prosecution has but does not intend to use – and seek expert legal advice in order to challenge the assumptions and claims made by investigating authorities. When bribery allegations are made against a person or company, the only way to challenge them is by mounting a robust, shrewd and evidence-based defence as swiftly as possible.
Read our article: CORRUPTION: HOW TO DEFEND YOURSELF