Domenico Messina
In the summer of 2006 , Messina was involved in the Calciopoli scandal , giving evidence on behalf of the Italian Football Federation . In July 2007 , Messina announced his intention to retire from professional refereeing at the end of the 2007–08 season , by which time he will have reached the age of 45 , the FIFA-specified age that referees must retire from top-level refereeing . 
<triplet> Calciopoli scandal <subj> 2006 <obj> point in time