Lamine Sanderson in Sierra Leone emails: I think Mr Blatter has to save the face of the game by calling it a day! The best thing for the future of football is to see a new phase and changes at the top of the global game otherwise, Fifa will be seen as lacking leadership and direction.

Jack Warner, a former top Fifa official who was among those indicted, has now issued a statement. Mr Warner, who has not been arrested, denies all charges. He faced repeated allegations of corruption during and after his time at Fifa.

Here's an excerpt from his statement., external

"I have been afforded no due process and I have not even been questioned in this matter. I reiterate that I am innocent of any charges. I have walked away from the politics of world football to immerse myself in the improvement of lives in this country where I shall, God willing, die.

"The actions of Fifa no longer concern me. I cannot help but note however that these cross-border coordinated actions come at a time when Fifa is assembled for elections to select a President who is universally disliked by the international community."

Who can fix Fifa? As a number of its officials are arrested over corruption allegations the BBC News Website looks at what does the future hold for the world's footballing body.

FA Chairman Greg Dyke tells BBC Radio 5 Live the arrests marked "a very serious day for Fifa and its leadership".

He reiterates that the FA would vote for Sepp Blatter's opponent if the presidential vote goes ahead as planned on Friday.

"We would vote for Prince Ali. We were one of the people who nominated him to stand against Blatter and we would vote for him if the election does go ahead.

"But I'm not certain it will go ahead in these circumstances... things are happening very fast.

"I've only been to one Fifa congress and it reminded me of something out of North Korea. So this one could be a bit livelier than that. It might not necessarily just be the adoration of the leader."

Image source, PA

@ianperkins69 tweets:, external @BBC_HaveYourSay Are FIFA's sponsors happy to be associated with them now? A mass pull out of sponsors is the only way to effect change.

Following the arrest of the seven Fifa executives, the BBC's James Reevell looks at the key questions relating to the current investigations.

Nicholas Elmslie in England email: Fifa upset too many nations with some clout when they handed the two World Cups to Russia and Qatar. Now they are paying the price. Blatter thinks that Fifa is above national laws and governments. He even refers to Fifa as "his government".

There were huge celebrations in Russia and Qatar back in 2010 when they won the right to host World Cups in 2018 and 2022, respectively. But now both bids are under criminal investigation...

Image source, Reuters

Vyacheslav Koloskov, a former longstanding Fifa vice-president from Russia, tells BBC Russian he did not witnessed any corruption schemes during his time in the Fifa.

Mr Koloskov says: "When I worked in Fifa nobody has been arrested or suspended, so there was no corruption, but I'm out of work in the organisation for six years and am no longer a member of the Fifa executive committee. I don't know how strong a blow it will be for Fifa, we have to wait for Blatter's comments."

Mr Koloskov took part in Russia's successful campaign to host the 2018 World Cup.

Cesar Assis in Brasil emails: It's a shame for us Brazilians....

Switzerland's Federal Office of Justice says it has "ordered the blocking of accounts at several banks in Switzerland through which bribes are claimed to have flowed as well as the seizure of related bank documents".

FIFA has said it is working with the Swiss authorities and welcomes any action that can help "root out wrongdoing in football".

In a statement, external, it said it understood that the arrests of the individuals in Zurich on behalf of the US authorises was carried out "in relation with CONCACAF and CONMEBOL business".

The actions of the Swiss Attorney General are connected to the 2018-2022 World Cup bidding process, it added.

"FIFA is fully co-operating with the investigation and is supporting the collection of evidence in this regard. As noted by the Swiss authorities, this collection of evidence is being carried out on a cooperative basis."

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.

John Parsley emails: Prince Ali Bin Al-Hussein of Jordan, described the development as "a sad day for football". Resign Prince Ali! This is a GREAT day for football.

And here's a statement by FA Chairman Greg Dyke, describing Wednesday's events as "very serious for Fifa and its current leadership".

He says the FA would vote for Sepp Blatter's sole opponent on Friday.

"As one of the associations who nominated Prince Ali it will not surprise you to learn that if the election for president goes ahead the FA will be voting for him. However, there must be a question mark over whether the election should take place in these circumstances.

"Clearly things are changing very quickly and our delegation to the Fifa congress in Zurich, which I am leading, will discuss the position and what we should do about it with our colleagues in Uefa when we meet tomorrow morning."

The Football Association tweets, external:

Image source, Twitter

The hashtag #FIFA is currently the top trending term worldwide on Twitter. Since the news of the corruption charges broke this morning, over 120,000 tweets that include the hashtag #FIFA were published on Twitter.

Michael Hershman, a co-founder of Transparency International who sat on Fifa's independent reform panel, has responded to Wednesday's events.

On Sepp Blatter: "With regard to the election, I reckon they will go ahead. I think Sepp Blatter has enough confidence to win, perhaps not in the first round but in the second. Which is really unfortunate. While he wasn't arrested himself, he must take responsibility for creating a climate within Fifa which has led to various scandals and essentially to these arrests.

"If you take a close look at the federations that will be voting for Blatter and look at what countries they are in, they are - by large - countries that don't offer accountability. If they do vote for Blatter, they'll get what they deserve.'

On the 2018-2022 World Cups: "It's going to call in question whether the World Cups both in Russia and Qatar were won in the spirit of fairness. While the question seems to have been resolved in the past six or seven months, I do believe that this will reopen debate on those issues."

Image source, Reuters

In a statement, Europe's football governing body Uefa says it "is astonished and saddened by the events which have taken place earlier today in Zurich and is now waiting for additional information".

It adds: "An informal meeting of the Uefa Executive Committee will take place this afternoon in Warsaw".