Complex sentence: In total, seven current FIFA officials were arrested at the Hotel Baur au Lac in Zürich on May 27; they were preparing to attend the 65th FIFA Congress, which is scheduled to include the election of the president of FIFA.
Split into simpler sentences: In total, seven current FIFA officials were arrested at the Hotel Baur au Lac in Zürich on May 27. They were preparing to attend the 65th FIFA Congress, which is scheduled to include the election of the president of FIFA.