FIFA president Sepp Blatter is confident that all of the World Cup venues will be completed by the time the tournament gets underway in Brazil 100 days from now.

Four stadiums in the country remain under construction, with the ground in Curitiba due to be completed just one month before the tournament starts.

There are also concerns that facilities at the airport, fan parks and various venues across the 12 host cities will not be completed in time.

"Listen, 100 days, it's a long way to go, and it's a short way to go if there are still problems," Sky Sports News quotes Blatter as saying.

"But now all problems are under control and it will be, in 100 days, an exceptionally good start for an exceptional competition.

"The Brazilian spirit of the game and the Brazilian ability to play football makes this World Cup very very special. I am sure it will be a great, great success."

The global tournament kicks off on June 12.