Here are brief profiles by BBC Mundo, of some of the Fifa officials seen detained in Zurich on Wednesday morning (see 10:23 entry).

Eduardo Li

This Costa Rican of Chinese origin is president of the Costa Rican Football Federation and was about to join Fifa's Executive Committee this coming Friday.

Mr Li was named "Personality of the Year 2014", according to the local newspaper La Nacion, for the "brilliant" performance of the national team in the 2014 World Cup in Brazil.

He studied civil engineering, but only exercised the profession for a few years to work in his family's business and also in international transportation and customs.

The newspaper also described him as a "football lover". In partnership with another businessman, Adrian Castro, he bought a football franchise that was to become the second division team Municipal Puntarenas.

Mr Castro was later killed in 2009 in a crime that has "never been fully resolved", he was quoted as saying.

In 2007, Mr Li took over Walter Niehaus as president of the Costa Rican Football Federation.

Jose Maria Marin

The former football player, Mr Marin was president of the Brazilian Football Confederation (CBF) from March 2012 to April 2015.

He has also been actively involved in politics, and is a current member of Brazil's Labour Party.

From 1982 to 1988 he held the post of president of the Paulista Football Federation (FPF) which manages all official tournaments within the state of Sao Paulo.

Mr Marin was named interim president of the CBF in March 2012 - when Ricardo Teixeira retired due to health problems - and also was a member of the 2014 World Cup committee.