A search operation had been conducted and revealed no threat of a bomb and the congress resumed its work, FIFA Secretary General Jerome Valcke said, according to German media outlets.
FIFA presidential elections on Friday come following a corruption scandal involving several high-ranking soccer officials earlier this week.
On Wednesday, the US Justice Department unsealed an indictment charging 14 defendants — among them nine senior FIFA officials — with racketeering, money laundering and taking about $150 million in bribes. Seven of the FIFA defendants were arrested in Switzerland on a US federal corruption warrant.
Only two nominees are running for the position, four-time President Joseph Blatter and FIFA Vice President for Asia Prince Ali bin Hussein of Jordan.