Juventus midfielder Fagioli under investigation for alleged betting
The FIGC told AFP on Wednesday that they opened an investigation into the 22-year-old, who has one Italy cap and was voted the best under-23 player in Serie A last season, in August.
Italian media reported that the Turin prosecutor's office had also opened an investigation.
Fagioli is suspected of using a variety of identities to place bets on illegal sites.
If found in breach of the FIGC's sports justice code, which prohibits professional players from betting on football, he could face a three-year suspension and a fine of 25,000 euros (£21,500).
Contacted by AFP, Juventus declined to comment.
This season, Fagioli has played six matches for Juventus, who are third in Serie A.
The club have battled off-the-field scandals this year.
Last season was dominated by a fraud scandal and the club missed out on a Champions League place after the FIGC deducted 10 points.
French international midfielder Paul Pogba has been suspended since September 11th following a positive doping test and faces a possible four-year ban.