The FIFA congress resumed on Friday after the all-clear was given following a bomb alert at the venue where world football's governing body will vote on whether to retain Sepp Blatter as president.

Zurich police spokeswoman Brigitte Vogt confirmed to AFP that a bomb alert had been received at Zurich's Hallen Stadium.

The bomb alert had been called in to a media outlet Friday morning against the FIFA event, Zurich police said in a statement.

Police and FIFA security searched the congress room, but the all-clear was soon given, confirmed FIFA's general secretary Jerome Valcke.

"An anonymous threat was received against FIFA and after an evaluation, the premises were searched and the all-clear has been given," said Valcke.